No Need to Replace the Battery Solar-Drive converts any kind of light into energy to power a watch, storing the surplus on a power cell. On a full charge, an Solar-Drive watch runs for months even in darkness with no need for regular battery replacement. It's designed to charge from ordinary everyday light sources like indoor fluorescent lighting and desk lights. You can go about your everyday life confident that your watch will never stop. EVOQUE 2 Parameters Watch Size: 46*14.2mm Strap Width: 24mm Strap Length: 260mm Weight: 105g Solar Movement Metal Watch case 180 days of battery life 304 stainless steel cover 50m Waterproof 24mm Width Silicone Strap Tribute To Aviation Stealthy and sophisticated, the EVOQUE 2 collection embodies the sleekness and precision. Crafted with meticulous attention to detail and equipped with essential features, these watches are a tribute to the cutting-edge technology that shaped the modern era of aviation. Light-Powered Technology Solar cells absorb light and convert it into energy. with Solar-Drive, A single full charge is enough to keep Solar-Drive working for six months in dim light. Solar cells absorb light and convert it into energy. with Solar-Drive, A single full charge is enough to keep Solar-Drive working for six months in dim light. Solar cells absorb light and convert it into energy. with Solar-Drive, A single full charge is enough to keep Solar-Drive working for six months in dim light. Never Stop Exploring EVOQUE 2 watch is designed for outdoor adventures ---The dial absorbs light and converts it into electricity for the watch to run ---The bezel is designed with a mechanical feel .The gear shape enhances the sense of industrial fashion ---The Arabic numeral time indicator is easy to read and has a phosphorescent coating for increased night-time visibility Calculation Speed Function Given a distance of 50m, the second hand starts counting from 0 seconds. Assuming that when you move 50 meters and the second hand moves to 20 seconds, the corresponding number on the watch dial is 9, indicating that your speed is 9km/h Waterproof 50M Support swimming, do not support shower bathing, hot springs, diving NORTH EDGE  PHOTON Digital Military Men's Watch Waterproof 50M Sports Solar Luminous Eco Friendly Clock Watches for Men hombre Parameters Watch Size: 44.5*50*14.8mm Strap Width: 24mm Strap Length: 260mm Weight: 104g Solar Movement Metal Watch case 180 days of battery life 304 stainless steel cover 50m Waterproof 24mm Width Silicone Strap No Need to Replace the Battery Solar-Drive converts any kind of light into energy to power a watch, storing the surplus on a power cell. On a full charge, an Solar-Drive watch runs for months even in darkness with no need for regular battery replacement. It's designed to charge from ordinary everyday light sources like indoor fluorescent lighting and desk lights. You can go about your everyday life confident that your watch will never stop. NORTH EDGE  PHOTON Digital Military Men's Watch Waterproof 50M Sports Solar Luminous Eco Friendly Clock Watches for Men hombre Parameters Watch Size: 44.5*50*14.8mm Strap Width: 24mm Strap Length: 260mm Weight: 104g Solar Movement Metal Watch case 180 days of battery life 304 stainless steel cover 50m Waterproof 24mm Width Silicone Strap