This citizen eco-driveâ® proximity smart watch combines technology with good looks. Crafted in black ion-plated stainless steel, this timepiece features a 46. 0mm case, black dial, luminous hands and markers, chronograph sub-dials, dual time, alarm, power reserve, blue second hand, and no wires or plugs for charging. The link bracelet secures with a deployment clasp. Bluetooth compatibility with ios and android means you're alerted to incoming calls, email and more. Ensuring accuracy, the reliable japanese quartz movement keeps you right on time. Eco-driveâ® technology harnesses the power of any light source so this style never needs a new battery. Water-resistant to 100 meters, this wristwatch 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.