Citizen Men’s ‘Tsuki-Yomi’ Radio-Controlled Moonphase Watch

Experience a remarkable fusion of innovation and precision with the Citizen Tsuki-Yomi, the world’s first light-powered, radio-controlled moon phase movement. Housed in a 43mm Super Titanium™ case, the Tsuki-Yomi offers comfort and superior scratch resistance. The deep blue dial features an elegantly integrated date window at 4 o’clock and a beautifully rendered Moonphase display at 6, all protected by sapphire crystal glass.

It’s powered by Citizen’s highly advanced radio-controlled Eco-Drive Caliber H874, which uses any light source, including moon light, to maintain continuous operation. This movement achieves remarkable accuracy of ±15 seconds per month and automatically synchronizes with multi-band radio transmitters around the world. Using a proprietary mathematical model known as the Luna Program, it calculates the moon’s phase each day based on precise radio-signal data, ensuring exceptional accuracy.

Engineered for global travellers, the dial integrates World Time across 24 time zones, along with Atomic Timekeeping and a Perpetual Calendar. With 100-metre water resistance, the Tsuki-Yomi is built for everyday wear and adventure. Completing the design is a Super Titanium™ bracelet with a fold-over clasp, delivering both comfort and secure fit. Every detail reflects Citizen’s commitment to advanced craftsmanship and long-lasting quality, further supported by a 5-year guarantee.

View all Citizen watches.

Brand	Citizen
Gender	Male
Case Material	Super Titanium™
Case Size	41-45mm
Dial Colour	Blue
Glass	Sapphire Crystal
Features / Functions	Date
Caliber	H874
World Time	24 time zones
Strap Material	Super Titanium™
Strap Type / Style	Bracelet
Movement	Eco-Drive
Water Resistance	Up to 100m
Guarantee	5 year

We will deliver the goods ordered by you to the address you give us for delivery at the time you make your order. It is your responsibility to ensure that the delivery address you give us is correct and accurate and that there is somebody to sign for and take delivery of the goods from the delivery service used.

All orders within the UK are delivered using Royal Mail Standard Recorded Delivery or an alternative carrier during Royal Mail industrial action.

Standard Recorded Delivery	within the UK is FREE and will arrive within 2-5 working days
Next Day Delivery	within the UK is £7.95 and will arrive the following day before 4pm.
International Delivery	we aim to dispatch your parcel within 3 working days, delivery times to your destination will differ, dependant on the country you are ordering from. International delivery is charged at £19.95
Hand Delivery	we are currently offering a personal door to door delivery service within 15 miles of our shop, BB7 2BX. Please call us on 01200 422127 if you require your items to be delivered locally.

To return your item(s) please use the enclosed returns slip which you will find within your package.

Please call us or email us using the details below to inform us of the intent to return your item, and provide us with your order number.

If you need any help with returning a product please contact us by using the below methods...

• Phone (Sales Team) - 01200 422127
• Email - info@nettletonsjewellers.co.uk
• Instore