5600 series Resin and stainless steel composition Adjustable silicone band Shock-resistant construction 200-meter water resistance Approx. battery life: 5 years on CR2016 Mineral glass 1/100-second stopwatch Countdown timer Hourly time signal with multi-function alarm Flash alert with buzzer LED backlight for super illuminator afterglow Full auto-calendar 12/24-hour format Size: H 0.50 x W 1.70 x L 1.95 in  Weight: 76 g   Style: gm5600ym-8 Material: Resin / Stainless steel