- Water Resistance: 200 meters
- Gender: Men's
- Department: Men
- CaseMaterial: Rubber
- Dial: Black
- Color: Black
- UPC: 079767443924
- Calendar: Date, Day
- Crystal: Mineral
- HarmonizedCode: 9102.19.40
- Case Material: Rubber
- Size: 51 mm
- WaterResistant: 200 meters
- Movement: JapaneseQuartz
- Collection: G-Shock
- Manufacturer: Casio
- Manufacturer Part Number: GA100-1A4
- Band Material: Rubber
- Type: Wristwatches
- Features: Alarm, Digital, World Timer, Chronograph
- Reference Number: GA100-1A4
- Brand: Casio
- Case Size: 51 mm