| Box Type | Original Box |
| Color | Black / Digital / Red |
| Case Diameter | 51 mm |
| Case Thickness | 16.9 mm |
| Case Color | Black |
| Case Material | Resin |
| Case Shape | Round |
| Case Back | Solid |
| Band Material | Resin |
| Band Type | Strap |
| Band Color | Black |
| Clasp | Tang |
| Dial Color | Black |
| Type | Analog-Digital |
| Crystal | Scratch Resistant Mineral |
| Hands | Red and Silver-tone |
| Dial Markers | Index |
| Second Markers | Minute Markers around the outer rim |
| Sub Dials | Three - 60 Second, 60 Minute and 1/10th of a Second |
| Bezel | Fixed |
| Bezel Color | Black |
| Bezel Material | Resin |
| Brand | Casio |
| Series | G-Shock |
| Collection Name | G-Shock |
| Gender | Mens |
| Model | GA100-1A4 |
| Movement | Quartz |
| Engine | Casio Calibre 5081 |
| Water Resistance | 200 meters / 660 feet |
| Calendar | Digital Day of the Week and Date |
| Functions | Day, Date, 1/1000th Second Stopwatch, Speed Indicator. Hourly Time Signal. Auto-Calendar. Daily Alarm. Countdown Timer. Backlight Auto LED light with afterglow. 12/24-Hour Formats. World Time 29 times zones (48 cities + UTC)., Hour, Minute, Second |
| Watch Features | Digital, Analog, World Time, Chronograph, Alarm |
| Watch Style | Sport |
| Warranty | 1 Year Jomashop Warranty |
| UPC Code | 079767443924 |
| Additional Info | 29 times zones, 4 daily alarms, an hourly alarm |
| Jomashop Sku | CSGA100-1A4CR |
| Item Variation | GA100 1A4, GA100.1A4, GA1001A4 |
| Department | Watches |
| Category | Watches |
