The proximity from citizen eco-driveâ® is a smarter watch that requires no wires or plugs for charging. With bluetooth ios and android compatibility, this timepiece features a 46. 0mm stainless steel case, black dial, chronograph sub-dials, power reserve, light level indicator, time/date sync, phone search/filter, visual/vibration alerts, silver-toned hands, date display, and blue second hand and details. The link bracelet secures with a push-button deployment clasp. Ensuring accuracy, the japanese quartz movement keeps you on time. Citizen 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.