Black ion-plated stainless steel case and bracelet. Fixed black ion-plated bezel. Black dial with luminous silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands. Date display at the 4 o'clock position. Day of the week display. Three- 24 hours, dual time and alarm. Citizen Caliber Eco-Drive W770 eco-drive movement with a 20.5 months power reserve. Scratch resistant mineral crystal. Pull / push crown. Solid case back. Case size: 46 mm. Case thickness: 15 mm. Round case shape. Band width: 25 mm. Band length: 8 inches. Deployment clasp with a push button release. Water resistant at 100 meters / 330 feet. Functions: chronograph, date, day, hour, minute, second, alarm, bluetooth, perpetual calendar, power reserve indicator, bluetooth. Additional Info: bluetooth compatiblity to ios and android, phone search/filter and visual/vibration alerts. Sport watch style. Watch label: Japan Movt. Citizen Proximity Perpetual Calendar Chronograph Mens Smartwatch BZ1005-51E.