KIMSDUN Sport watch, the perfect mix of sport , casual and fashion , matches jeans , T-shirt or suits very well. Stylish Skeleton Watch with Transparent Tonneau Case to highlight your personality . It is a nice watch for men /unisex and wide range ages of users. Sports Automatic Mechanical watch, precise and accurate time keeping. Waterproof, shock resistant and luminous hands, it is convenient to read the time in the dark. Harden glass for scratch resistant. Water resistant to 3 ATM (30 M): Washing hands, raining or splash, daily use waterproof. Not suitable for swimming, diving, shower. COMFORT and DURABILITY : Our silicone strap watch not only makes a comfortable sense for your wrist but also easy to match your clothes. **Automatic Movement : With a power reserve of up to 40 hours. It is powered by the natural movements of your wrist, need be worn at least 8 to 10 hours a day. So you never have to worry about changing your watch battery again. If your watch has completely stopped, rotate crown clockwise approximately 40 times (or until you feel resistance).