Mineral Glass Shock Resistant 200-meter water resistance Case / bezel material: Resin / Stainless steel Resin Band Stopwatch (1/100 second (00'00"00 to 59'59"99) / 1 second (1:00'00" to 23:59'59"), 24-hour counter, with split) Timer (set unit: 1 second, maximum set: 24 hours, measured in 1-second increments, auto-repeat) Multi-alarm, Hourly time signal Full auto-calendar 12/24-hour format EL backlight (with afterglow) Flash alert function (alarm / hourly time signal / timer linked) Accuracy: ±15 seconds per month Battery life: Approximately 2 years EL: Blue Green Size of case (H×W×D): 49.6×43.2×12.9mm Weight: 73g Battery: CR2016