Function: 12 Hours and seconds Indicator, 30 Minutes Chronograph. Column Wheel Chronograph, Luminous Hands, Blue steel screws and Exhibition Case Back Cover.
Case Material: 316L Stainless Steel. Vibration: 3 Hz (21,600 BPH).
Water Resistant: 5ATM (50 Meters). Any problem please write to us at first time, we can try the best to resolve all issues and satisfy you. Our working time is 12:00AM to 10:00PM in Monday to Friday (Beijing time).