Citizen Tsuki-Yomi Moon Phase Watch - BY1010-57H
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Full details
This guide is for owners of the Citizen Tsuki-Yomi Moon Phase Watch (BY1010-57H) who want to understand its features and care for it properly. The watch offers the world's first light-powered radio-controlled moon phase movement, providing accurate timekeeping and displaying the moon phase. However, some users may need to familiarize themselves with its advanced features and settings. This guide provides a detailed overview of the watch's functionality, setup, and maintenance.
All features
| Series | Tsuki-Yomi |
|---|---|
| Model Part Number | BY1010-57H |
| Brand | Citizen |
Extended Product Information
FAQs
How long does the Eco-Drive battery last?
The Eco-Drive battery can last for several months on a full charge, depending on usage and light exposure.
Is the watch water-resistant?
Yes, the watch is water-resistant up to 100 meters.
How do I set the date and time?
The watch sets the time and date automatically through radio signals. You can also set them manually using the crown and pushers.
Where can I get the watch serviced?
You can have the watch serviced at any authorized Citizen service center or a qualified watchmaker.
What kind of light is needed to charge the watch?
The watch can be charged by any light source, including sunlight and artificial light.
How often should I have the watch serviced?
It is recommended to have the watch serviced every 3-5 years to ensure optimal performance.
Can I manually adjust the moon phase?
The moon phase is automatically adjusted by the watch. There is usually no need for manual adjustment.
Troubleshooting
Watch is not keeping accurate time.
Ensure the watch is receiving radio signals correctly. Manually set the time if necessary. Check for obstruction of the antenna.
Moon phase display is incorrect.
Allow the watch to sync with the radio signal to update the moon phase. Consult the manual for manual adjustment if needed.
Watch is not charging.
Ensure the watch is exposed to light. Check the power reserve indicator to confirm the battery level.
Buttons are not working.
Check if the crown is properly locked. If the buttons still don't work, consider professional servicing.
Pros and Cons
Pros
- Eco-Drive technology ensures the watch is always running without battery changes.
- Radio-controlled timekeeping offers exceptional accuracy.
- The moon phase display provides a unique and functional complication.
- The use of Super Titanium™ makes the watch lightweight and durable.
- The sapphire crystal glass protects the watch face from scratches.
- The 100-meter water resistance makes it suitable for various activities.
Cons
- Advanced features may require some time to learn and understand.
- The initial setup for radio signal reception may take some time depending on location.
- The watch's sophisticated movement may require professional servicing.
- The intricate design of the moon pattern dial might not appeal to all users.
- The watch can be more expensive compared to other Citizen models.
Setup, Compatibility & Care
Setting Up
- Initial Charging: Expose the watch to sunlight or bright artificial light to fully charge the Eco-Drive battery.
- Radio Signal Reception: Initiate the radio signal reception process according to the user manual. This may involve selecting your region and waiting for the watch to sync with a radio transmitter.
- Setting the Date and Time: Once the watch receives the radio signal, it will automatically set the correct time and date. You can also manually adjust these settings using the crown and pushers.
Compatibility
The Citizen Tsuki-Yomi watch is compatible with any light source, including sunlight and artificial light. It is also compatible with radio signals from multi-band radio transmitters. No specific compatibility issues are expected.
Care
- Cleaning: Clean the watch with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials.
- Charging: Ensure the watch is regularly exposed to light to maintain its charge. Avoid storing the watch in a dark place for extended periods.
- Servicing: Have the watch serviced by a qualified watchmaker every few years to ensure optimal performance.