Casio G-Shock Iridescent Digital Blazing Translucent Resin Watch GA2100NN-1A. Item Specification Glass Mineral Glass Display Analog & Digital Resistance Shock Resistant, Water Resistant Case/Bezel Material Resin Watch Shape Octagonal Battery life Approx. battery life: 3 years on SR726W X 2 LED Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Movement Quartz Alarm 5 daily alarms Hourly time signal Band Type Two-Piece Strap Band Material Resin Stop Watch 1/100-second stopwatch Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, split time, 1st-2nd place times Timer Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Calendar Full auto-calendar (to year 2099) Features 12/24-hour format Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date Case Size 48.5 × 45.4 × 11.8 mm Acc