Casio G-SHOCK GA-100-1A1JF Analog-Digital Watch Black Dial
Casio G-SHOCK GA-100-1A1JF Analog-Digital Watch Black Dial
The Casio G-SHOCK GA-100-1A1JF is a black analog-digital quartz watch from the GA-100 series. Its large resin case combines G-SHOCK shock resistance with JIS Class 1 magnetic resistance and 20-bar water resistance.
Powered by Casio Module 5081, the watch has a black dial presentation with negative digital displays, analog hour and minute hands, and a speed indicator. The resin case measures 55 × 51.2 × 16.9 mm and is fitted with mineral glass and a black resin strap.
Functions include a 1/1000-second stopwatch with lap, split and speed calculation, World Time across 29 time zones, a 24-hour countdown timer, five daily alarms and an amber LED light. A full auto-calendar and an estimated two-year battery life make this Casio GA-100 watch a practical option for regular use.
Key Features
Casio Module 5081 battery-powered quartz movement
Shock-resistant resin case with JIS Class 1 magnetic resistance
Black analog-digital dial with negative digital displays
Mineral glass and black resin strap
20-bar / 200-metre water resistance
1/1000-second stopwatch with lap, split and speed calculation
World Time covering 29 time zones, 48 cities and UTC
Five daily alarms, 24-hour countdown timer and amber LED light
Specifications
Specification | Details |
Brand | Casio |
Model / Reference | GA-100-1A1JF |
Collection / Series | G-SHOCK GA-100 |
Movement | Casio Module 5081 |
Movement Type | Battery-powered quartz |
Case Material | Resin |
Case Size | 55 × 51.2 mm |
Case Thickness | 16.9 mm |
Crystal | Mineral glass |
Dial Color | Black |
Dial Details | Analog-digital display with negative digital displays and speed indicator |
Bracelet / Strap | Black resin strap |
Wrist Size | 145–215 mm |
Water Resistance | 20 bar / 200 metres |
Functions | World Time, 1/1000-second stopwatch, lap and split timing, speed calculation, 24-hour countdown timer, five daily alarms, hourly time signal, full auto-calendar, 12/24-hour format and amber LED light |
Battery | CR1220; estimated life of approximately 2 years |
Accuracy | ±15 seconds per month |
Weight | 70 g |
Other | Shock resistant; JIS Class 1 magnetic resistance |
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