Citizen Tsuki-yomi Moon Phase Sapphire Radio Controlled 42mm Watch

Eco-Drive radio-controlled watch with world time and perpetual calendar
At first look, you wouldnt know it from the classic-looking BY1030-09A mens model with moon phase function (full moon to new moon), but its packed with numerous features.
These includes a light-powered and radio-controlled Eco-Drive movement (Radio Controlled), which receives signals from atomic clocks around the globe, a perpetual calendar, world time and a power reserve indicator.
This watch also has a sapphire glass and is anti-magnetic. The model features a white dial on a blue leather strap.
Key Specifications
Movement: Citizen Caliber H874 Eco-Drive (solar-powered, no battery changes needed approx. 180-day power reserve, up to 2.5 years in power-save mode).
Case Size & Material: 42 mm diameter, 10.7 mm thickness, made of silver-tone stainless steel with a sapphire crystal.
Water Resistance: 10 ATM / 100 metres (330 feet).
Strap: Blue leather strap with a butterfly deployment clasp.
Features: Global radio-controlled time synchronization (Europe, USA, China, Japan), moon phase indicator, perpetual calendar, world time (24 time zones), day/date display, and power reserve indicator.