Citizen Eco-Drive Instruction Manual

Introduction

Thank you for purchasing a CITIZEN watch. To ensure correct use, please read these instructions carefully. Please confirm that the CITIZEN International Guarantee Card is included for your possible claim.

This watch is a solar-powered watch that contains a solar cell in its face that drives the watch by converting light energy into electrical energy. It is equipped with features including a 24-hour display and chronograph function that allows measurement of time in 1-second units up to 60 minutes.

1. Features

This watch is a solar-powered watch that contains a solar cell in its face that drives the watch by converting light energy into electrical energy. It is equipped with features including a 24-hour display and chronograph function that allows measurement of time in 1-second units up to 60 minutes.

2. Before Using

This watch is a solar-powered watch. Please fully charge the watch before using by exposing it to light.

A rechargeable cell is used in this watch to store electrical energy. This rechargeable cell is a clean energy battery that does not contain mercury or other toxic substances. Once fully charged, the watch will continue to run for about five months without additional charging.

Proper Use of this Watch

To use this watch comfortably, make sure to recharge it before it stops running completely. Since there is no risk of overcharging (Overcharging Prevention Feature), it is recommended that the watch be recharged everyday.

3. Displays and Buttons

The watch features the following components:

  • Hour hand
  • Chronograph minute hand
  • Second hand
  • Chronograph second hand
  • Button (B)
  • Minute hand
  • Crown
  • 24 hour hand
  • Button (A)
  • Date

The design varies depending on the model.

4. Functions Unique to Eco-Drive Watches

When the watch becomes insufficiently charged, the following warning features will be activated to inform the wearer that the watch is insufficiently charged.

Insufficient Charging Warning Feature

The second hand switches from 1-second interval movement to 2-second interval movement. When the capacity of the rechargeable cell decreases as a result of light not shining on the solar cell, the second hand switches from 1-second interval movement to 2-second interval movement (insufficient charging warning feature). Although the watch continues to keep time accurately at this time, the watch stops after about 5 days have elapsed after the second hand has switched to 2-second interval movement. When this happens, charge the watch by exposing it to light until the second hand returns to 1-second interval movement.

Notes:

  • During chronograph measurement, measurement stops and the chronograph second hand is reset to the 0 seconds position.
  • The chronograph minute hand stops at any arbitrary position. Return it to the 0 minutes position by pressing button (A).

Quick Start Feature

If the watch has stopped as a result of being insufficiently charged, the second hand will begin 2-second interval movement and the watch will begin to run about 10 seconds after the watch is exposed to light (approx. 500 lx). (The time until the hands begin to move varies depending on the model.) Please note, however, that the watch will stop again if the watch is blocked from the light and is not sufficiently charged.

When the Watch has Stopped due to Insufficient Charging

When the capacity of the rechargeable cell decreases as a result of the solar cell not being exposed to light, the watch will stop due to being insufficiently charged. The Quick Start Feature will be activated and the hands will begin to move if the solar cell is exposed to light. Sufficiently charge the watch by exposing to light so that it returns to the normal time display (1-second interval movement).

Note: The time is incorrect when the watch has stopped as a result of being insufficiently charged even if the watch starts to run. Reset the watch to the correct time before using.

Overcharging Prevention Feature

The overcharging prevention feature is activated when the rechargeable cell is fully charged so that it is not charged further.

5. General Reference for Charging Times

Below are the approximate times required for charging when exposing the watch dial to light continuously. This table is for general reference only and does not represent exact charging times.

Environment Illuminance (lx) Charging time (approx.)
To work for one day To start working normally when the cell is discharged To become fully charged when the cell is discharged
Outdoors (sunny) 100,000 3 minutes 16 minutes 11 hours
Outdoors (cloudy) 10,000 9 minutes 2 hours 25 hours
20 cm (7-7/8 inches) from a fluorescent lamp (30W) 3,000 30 minutes 5 hours 80 hours
Interior lighting 500 3 hours 30 hours -----

6. Handling Precautions

Try to Keep the Watch Charged at All Times

Please note that if you wear long sleeves, the watch can easily become insufficiently charged as a result of the watch being covered and not being exposed to light. The watch will continue to run properly if it is placed in as bright a location as possible even when not being worn.

Charging Precautions

  • Allowing the watch to reach high temperatures during recharging can damage the watch. Avoid recharging in locations that can reach high temperatures (about 60°C/140°F or higher).
  • Examples: Charging by placing the watch in close proximity to a light source that easily becomes hot such as an incandescent lamp or halogen lamp.
  • Charging the watch in a location that can easily become hot such as on an automobile dashboard.
  • When charging using the light from an incandescent lamp, charge while being careful that the watch does not become excessively hot by placing at a distance of at least 50 cm (20in) from the lamp.

Handling of Rechargeable cell

  • Please do not attempt to remove the rechargeable cell from the watch.
  • If the rechargeable cell has been unavoidably removed, store it in a location out of the reach of small children to prevent accidental swallowing.
  • If the rechargeable cell should happen to be swallowed, please consult a physician and seek medical attention immediately.

Only Use the Specified Rechargeable cell

  • Never use a rechargeable cell other than the rechargeable cell used in this watch. Although the watch is designed not to operate if another type of rechargeable cell is installed, since this may result in overcharging that can cause the rechargeable cell to rupture, there is the risk of both damage to the watch and injury to the wearer.
  • Only use the specified rechargeable cell when replacing the rechargeable cell.

7. Replacing the Rechargeable cell

Unlike ordinary silver-based batteries, the rechargeable cell used in this watch does not have to be periodically replaced since it is able to be charged and discharged repeatedly.

8. Setting the Time and Date

In the case the crown is of the screw-lock type, loosen the screw by turning the crown to the left before operating the crown, and after having returned the crown to the normal position following operation, turn it to the right while pushing it in to securely retighten it.

Setting the Time

  1. Pull the crown out to the time correction position when the second hand has reached the 0 seconds position.
  2. Turn the crown to set the time. The 24-hour hand moves in conjunction with the hour hand. Pay attention to AM and PM when setting the time.
  3. Securely return the crown to the normal position in synchronization with a telephone or other time service.

Hint for Accurately Setting the Time: After stopping the second hand at the 0 seconds position, turn the minute hand 4-5 minutes past the correct time and then turn it back to the correct time. The time on the watch can then be set to the correct time by pushing in the crown in synchronization with a time service tone.

Setting the Date

  1. Pull the crown out to the date correction position.
  2. Turn the crown to the right to set the date. The crown turns freely and the date does not change if the crown is turned to the left. If the date is set while the time on the watch is between the hours of about 9:00 PM and 1:00 AM, the date may not change on the following day. If this happens, set the date after temporarily moving the hands to a time other than between the above times.
  3. The date is based on a 31-day calendar. The date must be changed from the last day of the month to the first day of the following month for those months not having 31 days (months having 30 days and February).
  4. The date changes at around 12:00 AM.
  5. Once the date has finished being set, return the crown to the normal position.

9. Using the Chronograph

The chronograph second hand is normally placed at 12 o'clock position. Once the measurement starts, it can measure up to 60 minutes in units of 1 second. After 60 minutes have elapsed, each of the chronograph hands automatically stop at the 12:00 position.

Chronograph Timing

  1. Start timing by pressing button (B). The chronograph is repeatedly started and stopped by pressing button (B).
  2. Pressing button (A) resets the chronograph to 0 seconds.

Note: Do not subject the chronograph to strong impacts while chronograph timing is in progress. Subjecting the watch to a strong impact during chronograph timing or when the chronograph has stopped automatically after 60 minutes have elapsed can cause the chronograph minute hand to shift out of position. If this happens, press button (A) to reset to the 12:00 position before using the chronograph again.

10. Zero Positioning of Chronograph Second Hand

When resetting the chronograph, if the chronograph second hand does not return to the 0 seconds position or if the chronograph second hand has shifted out of position due to strong impact, perform zero positioning of the chronograph second hand according to the procedure described below.

  • In the case the crown is of the screw-lock type, loosen the screw before operating the crown.
  • The zero positioning procedure cannot be performed while the insufficient charging warning feature is activated (while the second hand is moving at 2-second interval movement due to the watch being insufficiently charged). Sufficiently charge the watch and check that the second hand is moving at 1-second interval movement before performing the zero positioning procedure.

Chronograph Second Hand Zero Positioning

  1. Pull the crown out to the time correction position.
  2. 1) Press button (B) for 3 seconds or more and release it; the watch enters the chronograph second 0 position correction mode.
  3. 2) Press button (B) to position the chronograph second hand at the 0 position (12 o'clock position).
  4. The chronograph second hand can be advanced one second at a time (in the clockwise direction) each time button (B) is pressed.
  5. The chronograph second hand can be advanced rapidly by depressing button (B) continuously.
  6. Once the chronograph second has been positioned at the 0 position, reset the time and return the crown to the normal position.
  7. Press button (A) to check that the chronograph minute hand has been reset to the 0 position.

11. Precautions

Water-resistance performance

There are several types of water-resistant watches, as shown in the following table. The unit "bar" is roughly equal to 1 atmosphere. WATER RESIST(ANT) xx bar may also be indicated as W.R. xx bar.

Dial Case (case back) Specifications Minor exposure to water (washing face, rain, etc.)
WATER RESIST or no indication WATER RESIST(ANT) Water-resistant to 3 atmospheres OK
WR 50 or WATER RESIST 50 WATER RESIST(ANT) 5 bar or WATER RESIST(ANT) Water-resistant to 5 atmospheres OK
WR 100/200 or WATER RESIST 100/200 WATER RESIST(ANT) 10bar/20 bar or WATER RESIST(ANT) Water-resistant to 10/20 atmospheres OK

For correct use within the design limits of the watch, confirm the level of water-resistance of your watch, as indicated on the dial and case, and consult the table.

Examples of use Moderate exposure to water (washing, kitchen work, swimming, etc.) Marine sports (skin diving) Scuba diving (with air tank) Operation of the crown or button with moisture visible
Water-resistance for daily use (to 3 atmospheres) NO NO NO NO
Upgraded water-resistance for daily use (to 5 atmospheres) OK NO NO NO
Upgraded water-resistance for daily use (to 10/20 atmospheres) OK OK NO NO

Water-resistance for daily use (to 3 atmospheres): This type of watch is water-resistant to minor exposure to water. For example, you may wear the watch while washing your face; however, it is not designed for use underwater.

Upgraded water-resistance for daily use (to 5 atmospheres): This type of watch is water-resistant to moderate exposure to water. You may wear the watch while swimming; however, it is not designed for use while skin diving.

Upgraded water-resistance for daily use (to 10/20 atmospheres): This type of watch may be used for skin diving; however, it is not designed for scuba or saturated diving using helium gas.

CAUTION

  • Be sure to use the watch with the crown pressed in (normal position). If your watch has a screw-lock type crown, be sure to tighten the crown completely.
  • Do NOT operate the crown or button with wet fingers or when the watch is wet. Water may enter the watch and compromise water-resistance.
  • If the watch is used in seawater, rinse with fresh water afterward and wipe with a dry cloth.
  • If moisture has entered the watch, or if the inside of the crystal is fogged up and does not become clear within a day, immediately take the watch to your dealer or Citizen Service Center for repair. Leaving the watch in such a state will allow corrosion to form inside.
  • If seawater enters the watch, place the watch in a box or plastic bag and immediately take it in for repair. Otherwise, pressure inside the watch will increase, and parts (crystal, crown, buttons, etc.) may come off.

CAUTION: Keep your watch clean.

  • Leaving dust and dirt deposited between the case and crown may result in difficulty in pulling the crown out. Rotate the crown while in its normal position, from time to time, to loosen dust and dirt and then brush it off.
  • Dust and dirt tend to be deposited in gaps in the back of the case or band. Deposited dust and dirt may cause corrosion and soil your clothing. Clean the watch occasionally.

Cleaning the Watch

  • Use a soft cloth to wipe off dirt, perspiration and water from the case and crystal.
  • Use a soft, dry cloth to wipe off perspiration and dirt from the leather band.
  • To clean a metal, plastic, or rubber watchband, wash away dirt with mild soap and water. Use a soft brush to remove dust and dirt jammed in the gaps in the metal band. If your watch is not water-resistant, take it to your dealer.
  • NOTE: Avoid using solvents (thinner, benzine, etc.), as they may mar the finish.

CAUTION: Operating environment

  • Use the watch within the operating-temperature range specified in the instruction manual. Using the watch where temperatures are outside the specified range may result in deterioration of functions or even stoppage of the watch.
  • Do NOT use the watch in places where it is exposed to high temperature, such as in a sauna. Doing so may result in a skin burn.
  • Do NOT leave the watch in a place where it is exposed to high temperature, such as the glove compartment or dash-board of a car. Doing so may result in deterioration of the watch, such as deformation of plastic parts.
  • Do NOT place the watch close to a magnet. Timekeeping will become inaccurate if you place the watch close to magnetic health equipment such as a magnetic necklace or a magnetic latch of a refrigerator door or handbag clasp or the earphone of a mobile phone. If this has occurred, move the watch away from the magnet and reset the time.
  • Do NOT place the watch close to household appliances that generate static electricity. Timekeeping may become inaccurate if the watch is exposed to strong static electricity, such as is emitted from a TV screen.
  • Do NOT subject the watch to a strong shock such as dropping it onto a hard floor.
  • Avoid using the watch in an environment where it may be exposed to chemicals or corrosive gases. If solvents, such as thinner and benzine, or substances containing such solvents come in contact with the watch, discoloration, melting, cracking, etc. may result. If the watch comes in contact with mercury used in thermometers, the case, band or other parts may become discolored.

Periodical inspections

Your watch needs inspection once in every two or three years for safety and long use. To keep your watch water-resistant, the packing needs to be replaced regularly. Other parts need to be inspected and replaced if necessary. Ask for Citizen genuine parts upon replacement.

12. Specifications

  • Caliber No.: H50*
  • Type: Analog solar-powered watch
  • Timekeeping accuracy: Within ±15 seconds per month on average (when worn at normal temperatures of +5°C to +35°C/41°F to 95°F)
  • Crystal oscillator: 32,768 Hz
  • Operating temperature range: -10°C to +60°C/14°F to 140°F
  • Display functions: Time: 24 hours, hours, minutes, seconds; Calendar: Date (with rapid correction feature)
  • Additional functions: Solar power function; Chronograph (display and measurement of elapsed time up to 59 minutes, 59 seconds in 1 second units); Insufficient charging warning feature; Overcharge prevention feature; Quick start feature
  • Continuous running times: Fully charged to stopped without charging: About 5 months (continuous running time differ depending on which frequency at which the chronograph is used and so forth); 2-second interval movement to stopped: About 5 days
  • Battery: Rechargeable cell

* Specifications are subject to change without notice.

PDF preview unavailable. Download the PDF instead.

e Adobe PDF Library 9.9

Related Documents

Preview Citizen Eco-Drive J850 Instruction Manual - Solar Powered Watch Guide
Comprehensive instruction manual for the Citizen Eco-Drive J850 analog solar-powered watch. Learn about charging, component identification, time and calendar adjustment, water resistance, precautions, maintenance, and specifications.
Preview Citizen Eco-Drive Watch Instruction Manual
Comprehensive instruction manual for Citizen Eco-Drive watches, covering features, operation, maintenance, and safety precautions. Learn how to set time and date, use the chronograph, and care for your solar-powered timepiece.
Preview Citizen Eco-Drive Caliber 0855 Watch: Setting and Operation Instructions
Comprehensive guide to setting, operating, and caring for your Citizen Eco-Drive Caliber 0855 watch, covering time setting, alarm, chronograph, and maintenance.
Preview CITIZEN Eco-Drive Watch User Manual
User manual for CITIZEN Eco-Drive watches, detailing features, operation, solar power, charging, handling, water resistance, and specifications.
Preview CITIZEN Eco-Drive Radio Controlled Watch H176 User Manual
Comprehensive user manual for the CITIZEN Eco-Drive Radio Controlled Watch Model H176, covering features, radio wave reception, time setting, solar power functions, troubleshooting, and precautions.
Preview Citizen B023 Solar Powered Watch User Manual
User manual for the Citizen B023 solar-powered watch, covering operation, time setting, charging, functions, care, precautions, and technical specifications.
Preview Citizen Eco-Drive Watch Instruction Manual: Cal. E81*/E82*
Comprehensive guide to operating Citizen Eco-Drive watches, models E81* and E82*. Learn about solar charging, setting time, calendar, chronograph, alarm, and maintenance procedures.
Preview Citizen Eco-Drive Watch Instruction Manual
Comprehensive guide to operating and maintaining your Citizen Eco-Drive watch, covering time and date setting, dual time functionality, Eco-Drive features, care, charging, and specifications.