Introduction
This manual provides comprehensive instructions for the Citizen Men's Eco-Drive Sport Luxury World Chronograph Atomic Time Keeping Watch (Model: AT8020-54L). This sophisticated timepiece combines Citizen's innovative Eco-Drive technology, powered by light, with advanced atomic timekeeping for unparalleled accuracy. It features a world chronograph, perpetual calendar, and multi-zone radio-controlled accuracy, making it an ideal companion for global travelers and watch enthusiasts alike.
Setup
Initial Charging
Your Eco-Drive watch is powered by light and does not require battery replacement. For optimal performance, ensure the watch is fully charged before initial use. Place the watch in direct sunlight or under strong artificial light for several hours. The power reserve indicator will show the current charge level.
Setting Time and Date (Atomic Timekeeping)
This watch automatically synchronizes with atomic clocks in 5 zones (North America, United Kingdom, Europe, Japan, and China) for precise timekeeping. Manual adjustment is rarely needed, but you can initiate a manual reception or set the time zone as follows:
- Time Zone Selection: Pull the crown out to the first click. The second hand will point to the current city code. Rotate the crown to select your desired city code (time zone).
- Manual Signal Reception: In an open area, press and hold the lower right button for a few seconds until the second hand moves to 'RX' (Receive). The watch will attempt to receive the atomic time signal. This process may take several minutes.
- Daylight Saving Time (DST): The watch can automatically adjust for DST. Refer to the detailed user guide for specific instructions on enabling or disabling this feature.
Video: How Atomic Timekeeping Works
This video explains the fundamental principles of atomic timekeeping and how your Citizen watch utilizes this advanced technology for superior accuracy.
Operating Instructions
Using the Chronograph
The 1/20 second chronograph measures up to 60 minutes. To operate:
- Start/Stop: Press the upper right button to start the chronograph. Press it again to stop.
- Reset: While the chronograph is stopped, press the lower right button to reset all chronograph hands to zero.
Perpetual Calendar
The perpetual calendar automatically adjusts for odd and even months and leap years until February 28, 2100. No manual date adjustment is required.
Power Reserve Indicator
The power reserve indicator sub-dial shows the remaining charge level of the watch. Keep the watch exposed to light regularly to maintain a full charge.
Pilot's Rotating Slide Rule Dial Ring
The inner rotating bezel, operated by the lower left crown, functions as a slide rule. This can be used for various calculations such as multiplication, division, fuel consumption, and speed. Consult the full user manual for detailed instructions on using the slide rule functions.
Maintenance
Cleaning Your Watch
Wipe the watch case and bracelet with a soft, dry cloth regularly to remove dirt and moisture. For stubborn dirt, a slightly damp cloth can be used, followed by a dry cloth. Avoid using chemical cleaners or abrasive materials.
Water Resistance
This watch is water-resistant to 200 meters (660 feet). It is suitable for professional marine activity and serious surface water sports, but not for diving. Ensure the crown is pushed in completely before exposing the watch to water.
Storage
When storing the watch for extended periods, ensure it is exposed to light periodically to maintain its charge. Avoid storing it in dark places for long durations, as this may deplete the power reserve.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch stops or hands do not move. | Insufficient charge. | Expose the watch to strong light for several hours to fully charge. |
| Time is incorrect. | Failed atomic signal reception or incorrect time zone setting. | Initiate a manual signal reception. Ensure the correct city code (time zone) is selected. Check for environmental interference. |
| Chronograph hands do not reset to zero. | Requires chronograph zero position adjustment. | Refer to the detailed user manual for instructions on adjusting the chronograph zero position. |
Specifications
- Model Number: AT8020-54L
- Movement: Eco-Drive (Light-powered)
- Timekeeping: Atomic Timekeeping (Radio-controlled in 5 zones)
- Crystal: Anti-Reflective Sapphire Crystal
- Case Material: Stainless Steel
- Band Material: Stainless Steel
- Water Resistance: 200 Meters (660 feet)
- Functions: 1/20 Second Chronograph (up to 60 minutes), Perpetual Calendar, 12/24 Hour Time, Power Reserve Indicator, Day/Date, World Time (26 cities), Pilot's Rotating Slide Rule Dial Ring.
- Dimensions: 5.98 x 5.98 x 7.01 inches; 6.3 ounces (Product Dimensions)
Warranty and Support
This Citizen watch comes with a 5-year limited warranty. For detailed warranty information, service, or additional support, please refer to the official Citizen website or contact their customer service. You can also find comprehensive user guides and FAQs on their support pages.
For further assistance, please visit the official Citizen support page: Citizen Watch Support