Inspired by the Casiotone SK-5 sampling keyboard that Mayer played as a kid 1/100th Stopwatch (24 Hr.), Countdown Timer (24 Hr.), Multi-Function Alarm, Flash Alert, EL Backlight, 12/24-Hour Time Formats Dimensions: 53.2 x 50.0 x 16.3mm / 66g Electro-luminescent backlight Caliber: Module: 3230, +/- 15-sec per month Power Reserve: 2-Year Battery (CR2016) Water Resistance: 200 meters Bracelet/Strap: Resin strap Lug Width: 25.8mm Made in Japan