Time to unplug. The CITIZEN 100th Anniversary Proximity Pryzm requires zero wires or plugs for charging. This timepiece is a smarter watch for the tech-savvy consumer with Bluetooth compatibility to iOS and Android. The Proximity features a perpetual calendar, 12/24-hour time, dual time, alarm, power reserve, light level indicator, time and date sync. Additional capabilities include phone search/filter, visual/vibration alerts and more! This model appears in a Super Titanium™ case with black dial, rose gold accents and bezel with a uniquely cut sapphire crystal and black polyurethane strap. 2018 Good Design as awarded by The Chicago Athenaeum: Museum of Architecture and Design. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number W770. Dial Black Pink Gold-Tone Accents Power Reserve Indicator Case 48 mm Two-Tone Super Titanium Band Strap Polyurethane Buckle Crystal Sapphire Crystal Superior scratch resistance and hardness Water-Resistance WR100/10Bar/333ft [Swimming, Showering & Snorkeling] Weight (G) 87.88 g Movement W770 Eco-Drive Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries.