1. Introduction
The Citizen PROMASTER Land Series JV1006-51L is a light-powered watch designed for durability and advanced functionality. It incorporates Citizen's Eco-Drive technology, which converts any light source into energy, thereby eliminating the need for regular battery replacement. This model features a combination of analog and digital displays, offering a comprehensive range of functions including a perpetual calendar, chronograph, and time difference setting, making it suitable for various environments and activities.
A close-up view of the Citizen PROMASTER Land Series JV1006-51L watch, showcasing its blue dial, stainless steel case and band, and the integrated analog and digital displays. The watch face displays the time, date, and various function indicators.
2. Setup
2.1 Initial Charging
Before first use, it is essential to expose the watch dial to a bright light source, such as natural sunlight or a fluorescent lamp, for several hours. This ensures that the Eco-Drive system fully charges the internal secondary battery, providing optimal power reserve for all functions.
A diagram illustrating the Eco-Drive light-powered technology. It shows how light passes through the cover glass and dial, is converted into electrical energy by the solar cell, and stored in the secondary battery to power the movement.
2.2 Time and Date Setting
The watch features an LED perpetual calendar that automatically adjusts for month lengths and leap years. For initial setup or after a prolonged period of darkness, you may need to set the home time zone and adjust for any time differences. Please refer to the detailed instructions in the full manual for specific button operations.
2.3 Band Adjustment
The stainless steel band is equipped with a three-fold push type clasp. For a comfortable and secure fit, the band may require adjustment. It is recommended that band adjustments be performed by a qualified jeweler or watch technician to prevent damage.
3. Operating Instructions
3.1 Chronograph Function
The watch includes a precise chronograph capable of measuring time in 1/100-second increments, with a total capacity of a 40-hour counter. Consult the comprehensive operating guide for detailed instructions on how to start, stop, and reset the chronograph.
3.2 Light Level Indicator
This function provides a visual indication of the current charging level, displaying the intensity of light the watch is receiving. This helps ensure the watch is adequately exposed to light for optimal performance.
3.3 Time Difference Setting
Utilize the time difference setting feature to easily adjust the watch to local time zones when traveling, without needing to reset the main timekeeping.
3.4 Rotating Ring with Simple Compass
The outer rotating bezel can be used as a basic compass. To use, align the hour hand with the sun. In the Northern Hemisphere, the 'S' mark on the bezel will then indicate South. This function is for general directional guidance.
3.5 Water Resistance (20 ATM)
This watch is water-resistant up to 20 atmospheres (200 meters), making it suitable for swimming, showering, and snorkeling. It is not designed for saturation diving. Always ensure all crowns are pushed in completely before any exposure to water to maintain water resistance.
An illustration depicting the water resistance of the watch, showing individuals comfortably exposed to rain, symbolizing its suitability for daily water exposure and recreational water activities.
4. Maintenance
4.1 Charging
To ensure the watch maintains optimal performance and power reserve, regularly expose it to light. Avoid storing the watch in dark places for extended periods, as this can deplete the secondary battery.
4.2 Cleaning
Wipe the watch case and band with a soft, dry cloth to remove dust and fingerprints. For more stubborn dirt, a slightly damp cloth can be used, followed by thorough drying. Avoid using harsh chemical cleaners, as they may damage the watch's finish or seals.
4.3 Power Save Function
When the watch is left in darkness for an extended duration, it automatically enters a power-saving mode to conserve energy. In this mode, the hands will stop moving, but the internal timekeeping continues. Once exposed to light again, the hands will quickly reset to the correct time.
5. Troubleshooting
5.1 Watch Not Running
If the watch stops functioning, the most common cause is insufficient charge. Expose the watch to bright light for several hours to allow the Eco-Drive system to recharge the secondary battery.
5.2 Incorrect Time or Date
If the time or date displayed is incorrect, first ensure the watch is fully charged. Then, refer to the "Time and Date Setting" section in the full manual for instructions on how to manually adjust or synchronize the watch.
5.3 Hands Not Moving Smoothly
Irregular hand movement can indicate a low power reserve. Fully charge the watch by exposing it to bright light. If the issue persists after adequate charging, contact Citizen customer support for assistance.
6. Specifications
| Caliber | U822 |
| Accuracy | ±15 seconds/month |
| Light-powered Duration | Approximately 3 years (with power save activated) |
| Functions | LED perpetual calendar, light level indicator, time difference setting, chronograph (1/100 seconds, 40-hour counter) |
| Water Resistance | 20 ATM (200 meters) |
| Thickness | 14.0 mm |
| Width | 43.9 mm |
| Glass | Sapphire glass (anti-reflective coating) |
| Case Material | Stainless steel, partially plated (gray color) |
| Band Material | Stainless steel |
| Band Width | 22.0 mm |
| Clasp Type | Three-fold push type |
| Additional Features | Class 1 antimagnetic, luminous (hands + indexes), dial parts from recycled materials, rotating ring with simple compass |
| Package Dimensions | 3.9 x 3.43 x 3.39 inches |
| Item Model Number | JV1006-51L |
| Department | Men's |
| Batteries | 1 CR2 battery required (included, refers to the secondary rechargeable cell for Eco-Drive) |
| Manufacturer | Citizen |
7. Warranty and Support
Citizen watches are manufactured to high standards of quality and craftsmanship. For detailed warranty information, service inquiries, or technical support, please refer to the warranty card included with your original purchase. You may also visit the official Citizen website for further assistance and contact information.
