Casio G-Shock GMA-S2100-4A2DR This series downsizes the GA-2100 to create a simple and slim design. The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA-2100 are now available in a compact configuration. Specifications Case / bezel material: Carbon / Resin Resin Band Mineral Glass Neobrite Shock Resistant Carbon Core Guard structure 200-meter water resistance 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) Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents) World time 31 time zones (48 cities coordinated universal time), daylight saving on/off 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 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) 5 daily alarms Hourly time signal Hand shift feature Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date Accuracy: ±15 seconds per month Approx. battery life: 3 years on SR726W × 2 Size of case : 46.2×42.9×11.2mm Total weight : 41g
