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