Features: High quality electronic movement with battery LR1130. 50 M water resistant, suitable for daily waterproof. Precision cutting hole and personalized regulation, perfect fit wrist. Stainless steel back cover and buckle, thickening and hard acrylic resin mirror, high quality ABS plastic case and PU plastic strap. Function: Luminous, alarm, 50M water resistant, stop watch, seconds chronograph, week display, 12/24 hours.