Fiery and bold G-SHOCK watches glowing with flames of awesome color. G-SHOCK is all about taking on challenges, and the vivid colorful gradation of the Flame Inside line puts this blazing passion front and center. Beginning with the GA-100 with distinctive large case and the GA-2100 with octagonal case, the design brings in motifs of billowing smoke for the band and features a brightly burning dial in flames of blues or oranges. Choose your favorite look — the GA-100FL-1A or GA-2100FL-1A with vivid blue dial and gradated gray-on-black body, representing the hottest flames of conviction against rising white plumes of smoke; or the GA-100FL-8A or GA-2100FL-8A with bold orange dial and gradated black-on-gray body, evoking flames of fiery passion against a dark smokey backdrop. Case size (L× W× H) 48.5 × 45.4 × 11.8 mm Weight 51 g Case and bezel material Carbon / Bio-based resin Band Bio-based resin band Construction Shock Resistant Carbon Core Guard structure Water resistance 200-meter water resistance Power supply and battery life Approx. battery life: 3 years on SR726W X 2 Glass Mineral Glass Compatible band size 145 to 215mm Other Neobrite World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off Stopwatch 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) Alarm/hourly time signal 5 daily alarms Hourly time signal Light 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) Light color LED:White Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Accuracy Accuracy: ±15 seconds per month Other 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