BEST OF SOURCE BOS Waterproof Multi-Function Men's Solar Sport Combination Watch - Blue Features: Solar-powered (keep the watch working while the battery dies), alarm, chronograph, calendar, LED light, dual time display Color of band: Black; Band Material: Pu plastic; Movement: Japanese quartz; Display: Digital and analog Watch case diameter (cm): Approx 4.4; Watch case thickness (cm):1.5; Watch length (cm): Approx 24; Weight (g): Approx 60 5 ATM waterproof (can for swimming but not for hot showering, please do not press buttons under water) Package includes: Watch x 1