Pairing modern technology with bold functionality, this citizen eco-driveâ® proximity pryzm chronograph smart watch makes time work for you. With no wires or plugs needed for charging, this watch features a blue dial with a perpetual calendar, 12/24-hour time, power reserve, light level indicator, alarm, time/date sync and uniquely cut sapphire crystal in a 48. 0mm stainless steel case. Bluetooth compatibility with ios and android, means you're notified of incoming calls, email and more with visual and vibration alerts. Japanese quartz movement ensures accurate timekeeping, and the citizen eco-driveâ® technology harnesses the power of any light source so it never needs a new battery. The stainless steel link bracelet secures with a fold-over clasp. Water resistant to 100 meters, includes a five-year limited manufacturer warranty, with an additional one-year warranty upon registering your watch with citizen. We are an authorized citizen dealer.