MODEL: AT8285-68Z MOVEMENT TECHNOLOGY: H800, Eco-Drive, Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries. CASE WIDTH (MM): 42 Bracelet: Super Titanium CASE MATERIAL: Black Super Titanium Anti-Reflective Sapphire Crystal: Impact and shatter resistant - anti-reflective coating deflects light CLASP: Fold Over Clasp with Push Buttons DIAL: Purple WATER-RESISTANCE: WR100/10Bar/333ft [Swimming, Showering & Snorkeling] Synchronized to Atomic Time Clock for Superior Accuracy Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 26 Time Zones 1/20 Second Chronograph Measures up to 60 Minutes Perpetual Calendar 12/24 Hour Time Power Reserve Indicator