The BERING watch has a highly scratch-resistant and flat sapphire crystal covering the blue dial Solar watch collection | any kind of light will charge it and when fully charged it runs for 6-12 months | quartz movement The case is made from black IP-plated titanium. The case is 39 mm in diameter and 8 mm in thickness The strap is made from black IP-plated titanium with titanium links. The straps length is 170 mm and the width is 21 mm Water resistant up to 10 ATM / 100 meters / 328 feet | General resistance to showering swimming and snorkeling but not diving