Introduction and Overview
This manual provides comprehensive instructions for the proper use and care of your Citizen Eco-Drive Chronograph Watch. Please read this manual thoroughly to ensure optimal performance and longevity of your timepiece.
The Citizen Collection Eco-Drive Chronograph series, featuring models with black, silver, and blue dials, showcasing the stylish design.
Initial Setup and Charging
Your Citizen Eco-Drive watch is powered by light. Before initial use, ensure the watch is fully charged.
Charging Instructions
Expose the watch dial to direct sunlight or strong artificial light for several hours. A full charge typically provides approximately 1.5 years of power reserve with the power-saving function active.
This diagram illustrates the Eco-Drive mechanism: light penetrates the watch face, is converted into electrical energy by a solar cell, and stored in a secondary battery to power the watch movement. This eliminates the need for regular battery replacement.
To maintain charge, store the watch in an area where it can receive light, rather than in darkness.
Time and Date Setting
Refer to the detailed operating instructions for movement E821 on the official Citizen website for precise time and date setting procedures. A link to the manufacturer's website is provided in the "Support" section.
Operating Instructions
Time Display
The watch displays hours, minutes, and seconds.
Date Display
The watch features a date display. This model includes a perpetual calendar, which automatically adjusts for month lengths and leap years once set correctly.
Chronograph Function
The chronograph measures elapsed time with 1/20 second accuracy, up to 60 minutes. Specific instructions for starting, stopping, and resetting the chronograph are available in the full manual on the manufacturer's website (Movement E821).
A detailed view of the watch dial, highlighting the chronograph sub-dials, the date aperture, and the luminous hands and indices for enhanced readability.
Luminous Features
The hands and indices are treated with luminous material, allowing for time readability in low-light conditions.
Maintenance
Cleaning
Wipe the watch regularly with a soft, dry cloth to remove dust and smudges. For water-resistant models, a damp cloth can be used, followed by drying.
Water Resistance
This watch features 10 ATM water resistance, suitable for daily use, showering, and surface swimming. Avoid operating buttons or the crown when the watch is wet.
This image illustrates the watch's high water resistance, making it safe for everyday activities involving water, such as washing hands or being caught in the rain.
Avoiding Extreme Conditions
Do not expose the watch to extreme temperatures, strong magnetic fields, or harsh chemicals, as these can affect its accuracy and integrity.
Power Reserve
To ensure continuous operation, regularly expose your Eco-Drive watch to light. If the watch stops due to insufficient charge, expose it to light immediately to resume operation.
Troubleshooting
Common Issues and Solutions
- Watch Not Running
- Cause: Insufficient charge.
- Solution: Expose the watch to strong light (e.g., direct sunlight) for several hours to fully charge the secondary battery.
- Incorrect Time/Date
- Cause: Time or date not set correctly, or watch has run out of power.
- Solution: Fully charge the watch, then refer to the official Citizen website for detailed instructions on setting the time and perpetual calendar for movement E821.
- Chronograph Malfunction
- Cause: Improper operation or need for reset.
- Solution: Consult the full operating manual for movement E821 on the Citizen website for specific chronograph usage and reset procedures.
For issues not covered here, please contact Citizen customer support or visit an authorized service center.
Product Specifications
| Feature | Detail |
|---|---|
| Movement | Eco-Drive (Light-Powered) |
| Accuracy | ±15 seconds per month |
| Power Reserve | Approximately 1.5 years (with power save function) |
| Glass | Crystal Glass |
| Case/Band Material | Stainless Steel |
| Water Resistance | 10 ATM |
| Functions | Perpetual Calendar, Chronograph (1/20 sec, 60 min), Luminous Hands & Indices, Date Display |
| Movement Number | E821 |
| Case Dimensions | 11.7 x 8.6 x 8.6 cm |
| Weight | 126 g |
| Manufacturer | CITIZEN |
| Country of Origin | China |
Warranty Information and Customer Support
Warranty
As of October 1, 2025, Citizen watches purchased globally are covered by an international warranty extended from 1 year to 3 years. Please retain your warranty card.
Online Resources
For the complete operating manual and further support, please visit the official Citizen website and search for movement number E821.
Official Citizen Website: www.citizenwatch-global.com
Contact Support
For service or repair, please contact your local authorized Citizen service center.
