---------------------------------------------------------------------- [Precautions for Use of Electrical Appliances] 】 When using electrical appliances, please note that the voltage is different from that of Japan, which can cause malfunction. The plug type is Japanese type (A or B type), so please check the voltage and use a transformer. The transformer is different from the conversion adapter. A transformer is not required for USB power supply. ---------------------------------------------------------------------- [Equipped with an aviation slide rule. Multifunctional pilot watch PROMASTER] Citizen Promaster is a full-fledged sports watch that combines functionality, durability, and safety that can withstand harsh environments. Introducing a model inspired by the color of the sky from the popular SKY series. Receives standard radio waves and automatically adjusts to the correct time. Equipped with a world time function that quickly changes the time to 24 cities around the world. This is a multi-functional pilot watch that uses Citizen's unique Eco-Drive technology to keep moving as long as there is light. [Green bezel reminiscent of the aurora spread across the surface] The dial also uses the popular green color, giving it a unified design. The sky, which represents time, spreads out inside the wide case, giving an image of boldness and fearlessness that befits the name SKY. [Invention for long-term use] We have pursued improvements in durability because we want it to be used for a long time. Waterproof performance and highly durable glass using sapphire glass protect your precious watch from all kinds of situations. [Function/Performance] Receives standard radio waves from Japan, China, America, and Europe in four areas of the world, which are transmitted based on atomic clocks whose error is said to be 1 second every 100,000 years, and automatically sets the time and calendar. Fixed. [Product details] Light-powered Eco Drive radio clock, ±15 seconds/month (when not receiving data), sapphire glass (non-reflective coating), case/band: stainless steel, water resistant to 20 ATM, date display, luminous (hands + index) , aviation slide rule