Tsuki-Yomi Radio-Controlled Moon Phase BY1010-57X - Wristwatch CITIZEN - Free user manual and instructions
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| Product Type | Analog wristwatch with radio-controlled timekeeping |
| Brand | Citizen |
| Model | Tsuki-Yomi Radio-Controlled Moon Phase BY1010-57X |
| Movement | Eco-Drive (solar-powered) with atomic timekeeping |
| Case Material | Super Titanium with scratch-resistant coating |
| Band Material | Titanium bracelet |
| Case Diameter | 42 mm |
| Case Thickness | 12 mm |
| Weight | Approx. 160 g |
| Water Resistance | 10 ATM (100 meters / 330 feet) |
| Crystal | Sapphire glass with anti-reflective coating |
| Power Source | Solar panel integrated into the dial |
| Power Reserve | Approximately 6 months when fully charged |
| Radio Control | Multiband reception (US, Europe, Japan, China) |
| Moon Phase Display | Accurate moon phase indicator with correction |
| Perpetual Calendar | Date and day fully automatic until February 2100 |
| Additional Functions | Date display, 24-hour indicator, power-saving mode |
| Maintenance | No battery changes required; light-powered operation |
| Cleaning | Wipe with a soft cloth; avoid solvents and chemicals |
| Safety Precautions | Keep away from strong magnetic fields and high temperatures |
| Spare Parts | Available through Citizen authorized service centers |
| Repairability | Serviceable by Citizen certified technicians |
Frequently Asked Questions - Tsuki-Yomi Radio-Controlled Moon Phase BY1010-57X CITIZEN
How does the radio-controlled timekeeping work on the Citizen Tsuki-Yomi?
The watch receives time signals from atomic radio transmitters in Japan, China, the USA, and Europe. It automatically adjusts the time and date based on the strongest signal, ensuring high accuracy.
What is Citizen Eco-Drive technology?
Eco-Drive is a solar-powered system that converts light into electricity to charge an internal rechargeable cell. It eliminates the need for regular battery replacements and provides several months of power reserve when fully charged.
How do I set the moon phase display?
The moon phase can be manually adjusted using the crown or through the watch's setting sequence. Consult the user manual for step-by-step instructions. The display is accurate to 1 day in 100 years with proper setting.
Is the watch water-resistant and can I swim with it?
The watch has a 10 ATM water resistance, making it suitable for swimming, Snorkeling, and everyday exposure to water. However, it is not designed for scuba diving.
How often do I need to replace the battery?
With Eco-Drive technology, there is no disposable battery to replace. The internal rechargeable cell typically lasts for decades and can be replaced by a Citizen service center if it eventually wears out.
What should I do if the watch stops working?
If the watch stops, it likely means the power reserve is depleted. Place the watch in bright sunlight for several hours to recharge. If it still does not work, contact a Citizen authorized service center.
Can I manually adjust the time if I don't want to use radio reception?
Yes, you can disable the radio-controlled feature and set the time manually using the crown. Instructions are provided in the manual. The perpetual calendar will still track dates normally.
How do I change the time zone on this watch?
The time zone can be adjusted via the crown or by selecting a city code. The watch receives radio signals and can automatically update to the correct time when you travel. Refer to the manual for the specific time zone table.
Is the titanium bracelet adjustable?
Yes, the bracelet has removable links, allowing you to adjust the fit. Use a spring bar tool or visit a jeweler. The links are screwed or pinned, depending on the design.
Where can I find replacement straps or spare parts for this watch?
Genuine replacement straps and parts are available through Citizen authorized service centers or official dealers. Provide your model number (BY1010-57X) when ordering.
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USER MANUAL Tsuki-Yomi Radio-Controlled Moon Phase BY1010-57X CITIZEN
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Product information
Brand : CITIZEN
Model : Tsuki-Yomi Radio-Controlled Moon Phase BY1010-57X
Category : Wristwatch