From G-SHOCK, the watch brand that is constantly setting new standards for timekeeping toughness, comes the GA100-1A1 analogue model. Living up to G-Shock?s reputation for big case designs, comes a revolution in case size with the introduction of the X-Large G. This Ana-Digi, ?three-eyed? monster measures in at a whopping 55 x 51.2 x 16.9mm size, with an attention to detail that is second to none. Large anti-slip buttons provide easy operation, embossed indexes gives a 3-D look and a rivet bezel design adds strength to its overall appearance. 1/1000-second stopwatch, velocity indicator, World Time, 5 alarms and much more provides these models with unmatched function and performance.This series is designed in the image of Nishikigoi, a world-renowned variety of carp that are often called "living jewels" and "swimming art pieces".Base model for this lineup is the classic GA-100 digital-analog combination model.The white, red, and black motif of the GA-100JK is based on the white, scarlet, and black Taisho Sanshoku koi. The white face also features red and black accents, creating the Taisho Sanshoku image. The hand of the inset dial of the GA-100JK is designed in the image of a Nishikigoi.The band ring of this watch features an illustration of a Nishikigoi to emphasize the connection between this model and the Nishikigoi.The package design and special cards included with this model was designed by the independent BlackEyePatch label of Tokyo.This G-SHOCK model is made in Japan and this reflects the quality and attention to detail for which Japan is famous.Case / bezel material: ResinResin BandMagnetic ResistantShock ResistantMineral Glass200-meter water resistanceLED lightAuto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglowWorld time29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city / World time city swapping1/1000-second stopwatchMeasuring capacity: 99:59'59.999''Measuring modes: Elapsed time, lap time, split timeOthers: Speed (0 to 1998 units / hour), Distance input (0.0 to 99.9)Mach indicator (speed exceeding 1225 units / hour)Countdown timerMeasuring unit: 1 secondCountdown range: 24 hoursCountdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)Other: Auto-repeat5 daily alarms (with 1 snooze alarm)Hourly time signalFull auto-calendar (to year 2099)12/24-hour formatRegular timekeepingAnalog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed)Digital: Hour, minute, second, pm, month, date, dayAccuracy: ±15 seconds per monthApprox. battery life: 2 years on CR1220Size of case : 55×51.2×16.9mmTotal weight : 72g