The GBA900CB-1A is a sleek and stylish digital wristwatch designed by Casio, renowned for its durability and functionality. This model belongs to the G-Shock series, celebrated for its robustness, making it suitable for outdoor activities and sports. The watch features a range of advanced functions, including a built-in step tracker, Bluetooth connectivity for syncing with smartphones, and a long-lasting battery life. Its black resin case and band give it a modern, sporty look, while its digital display ensures easy readability in various conditions. The GBA900CB-1A combines cutting-edge technology with Casio's signature toughness, making it a reliable companion for everyday wear and active lifestyles.

- Module No. 5641
- 51.3 x 48.9 x 16.6mm Case Size
- 61g Weight
- Shock Resistant (G-SHOCK)
- Double LED Light
- Mobile link (Automatic connection, wireless linking using Bluetooth®
- Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
- Life Log calculation function (Calorie and distance calculations based on step count), Including basal metabolic rate
- Daily data display: Step count, calorie, distance
- User Profile Creation
- Airplane Mode
- Dual time (Home city time swapping)
- 1/100-second Stopwatch
- Countdown Timer
Timer for interval measurement (up to five-time settings)
Measuring unit: 1 second
Input range: 00'00'' to 60'00'' (1-second increments)
Others: Auto-repeat, 5-second countdown auto start, repeat (1 to 20 times)
- 5 Daily Alarms
- Hourly time signal
- Full auto-calendar (to year 2099)
- 12/24-hour format
- Button operation tone on/off
- Regular timekeeping: Hour, minute, second, pm, month, date, day
- Accuracy: ±15 seconds per month (with no mobile link function)
- Approx. battery life: 2 years on CR2025