Introduction
This instruction manual provides essential information for the proper use and care of your Citizen Promaster Eco-Drive Eco Sky watch, model CB0248-01X. This timepiece combines advanced technology with durable design, featuring Citizen's proprietary Eco-Drive light-powered movement, atomic timekeeping for superior accuracy, a perpetual calendar, and robust water resistance.
Figure 1: Front view of the Citizen Promaster Eco-Drive Eco Sky watch (Model CB0248-01X).
Eco-Drive Technology: How It Works
Your Citizen Eco-Drive watch is powered by light, eliminating the need for battery replacement. Light, both natural and artificial, passes through the watch crystal and dial to a solar cell. This solar cell converts light into electrical energy, which is then stored in a rechargeable power cell. This stored energy drives the watch movement, ensuring continuous and accurate timekeeping.
Video 1: An animation demonstrating the Citizen Eco-Drive technology, showing how light is converted into energy to power the watch.
Setup and Initial Operation
1. Charging the Watch
Upon receiving your watch, expose it to bright light (natural sunlight is ideal) for several hours to ensure it is fully charged. The watch may arrive in a low-charge state. A full charge allows the watch to operate for an extended period, even in darkness.
2. Setting the Time and Date
Your Promaster Eco-Drive Eco Sky watch features atomic timekeeping technology, which synchronizes with atomic clocks for superior accuracy. The watch can automatically adjust time in 26 time zones. Refer to the detailed instructions on the official Citizen website for specific steps on how to manually set the time, date, and select your desired time zone, or to initiate a manual synchronization with the atomic clock signal.
3. Using the Perpetual Calendar
The perpetual calendar automatically adjusts for odd and even months and leap years, ensuring the correct date is always displayed without manual adjustment until the year 2100.
Operating the Watch Functions
Time Display
The watch features a clear analog display for hours, minutes, and seconds. The dial also includes a slide rule bezel, which can be operated using the crown on the left side of the watch case. This slide rule is designed for various calculations, such as multiplication, division, and unit conversions, often used in aviation.
Figure 2: Side view of the watch, highlighting the crown and pushers for function adjustments.
Atomic Time Synchronization Check
To check the last successful atomic time synchronization, consult the watch's specific operating guide. Typically, a button press or crown manipulation will indicate the status (e.g., 'OK' for successful sync, 'NO' for no sync).
Care and Maintenance
Water Resistance
This watch is rated for 200 meters (20 ATM) water resistance, making it suitable for swimming and recreational diving. Ensure the crown is fully pushed in and, if applicable, screwed down before any water exposure to maintain water resistance.
Crystal Care
The watch features a durable sapphire crystal, known for its high scratch resistance. While highly resistant, it is not entirely scratch-proof. Avoid unnecessary impacts or abrasive materials.
Leather Strap Care
The brown leather strap is made from genuine leather. To prolong its life, avoid prolonged exposure to water, direct sunlight, and extreme temperatures. Clean with a soft, damp cloth and allow to air dry. Periodically conditioning the leather can help maintain its suppleness and appearance.
Figure 3: Rear view of the watch, displaying the stainless steel case back and genuine leather strap.
Power Cell Maintenance
As an Eco-Drive watch, it requires regular exposure to light to maintain its charge. If stored in darkness for extended periods, the power reserve may deplete. To prevent this, ensure the watch is exposed to light periodically. If the watch stops, expose it to bright light for several hours to recharge.
Troubleshooting
- Watch Not Running or Hands Not Moving: Ensure the watch has received sufficient light exposure to charge the Eco-Drive power cell. Place the watch under bright light for several hours.
- Incorrect Time or Date: The atomic timekeeping feature should automatically correct the time. If not, perform a manual time synchronization. Refer to the full instruction manual on the Citizen website for detailed steps on manual time and date setting.
- Water Leakage: If you suspect water has entered the watch, immediately take it to an authorized Citizen service center. Do not attempt to open the watch yourself.
For more comprehensive troubleshooting guides and solutions, please visit the official Citizen support website.
Specifications
| Feature | Detail |
|---|---|
| Model Number | CB0248-01X |
| Movement | Eco-Drive (Light-Powered) |
| Timekeeping | Atomic Timekeeping, Synchronized Time Adjustment (26 Time Zones) |
| Calendar | Perpetual Calendar, Date Display |
| Case Material | Silver-Tone Stainless Steel |
| Crystal | Sapphire Crystal |
| Strap Material | Brown Leather |
| Water Resistance | 200 Meters (20 ATM) |
| Manufacturer | Citizen |
| Package Dimensions | 6.1 x 5.24 x 4.09 inches; 1.14 Pounds |
Warranty and Support
Your Citizen Promaster Eco-Drive Eco Sky watch comes with a 5-year limited warranty. This warranty covers manufacturing defects under normal use. For complete warranty terms and conditions, service requests, or additional support, please visit the official Citizen website or contact their customer service department.
Figure 4: The protective Promaster case in which the watch is packaged.
