The Casio G-Shock is a classically styled sport watch that offers exceptional accuracy and functionality. Powered by natural and artificial light, this watch is radio controlled for accurate timekeeping. Shock resistant and water resistant up to 200 meters, it's a top performer for almost any activity, wet or dry. Model No.: GWM500A-1 Special Features: Chronograph, stopwatch, atomic timekeeping, solar powered, shock resistant, 20ATM water resistance Number of Batteries: 1 Features: Atomic Time, Stopwatch, Digital, Water Resistant, Quick Ship Jewelry Closure: Buckle Power Source: Ecodrive Watch Movement: Quartz Water Resistance: 200m Band Color: Black Dial Color: Gray Metal Color: Silver Tone Case Thickness: 15.5mm Case Width: 46mm Watch Band Length: 9 Inch Band Content: Resin Case Materials: 100% Stainless Steel Band Width: 22mm Care: Wipe Clean Country of Origin: Imported Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.