Equipped with an aviation scale Multi-functional Pilot Watch: This professional Citizen Pro Master sports watch combines functionality, durability, and safety to withstand harsh environments. From the popular SKY series, a model inspired by the sky color. Receives standard radio waves and automatically corrects at the correct time. Equipped with a world time function that allows you to quickly switch between 24 cities around the world. This is a multi-functional pilot watch that continues to move as long as it has light (Dark blue bezel and dial reminiscent of late night sky): White color is used for a refreshing impression. Water resistant, durable glass with sapphire crystal protects your precious watch from all occasions Functions/Performance: Receive standard radio waves from Japan, China, USA, and Europe in 4 areas that are transmitted based on atomic clocks known for 100,000 years. Automatically corrects the time and calendar [Product Details] Photo-powered Eco-Drive radio watch ± 15 seconds per month (non-reception), sapphire glass (non-reflective coating), case: stainless steel, band: urethane, water resistant to 20 ATM, date display, luminous (hands + index), aviation measuring scale