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 | solar movement The case is made from blue IP-plated medical grade (316L) stainless steel. The case is 40 mm in diameter and 9 mm in thickness The strap is made from blue IP-plated milanese consisting of medical grade (316L) stainless steel. The straps length is 203 mm and the width is 24 mm Water resistant up to five ATM / 50 meters / 164 feet | General resistance to splashing showering but not to swimming snorkeling or diving