Casio G-Shock GBA-900 Lineup G-SQUAD Bluetooth¶ô¶÷ Dual Time Bio-Based Watch GBA-900CB-1A

Presenting the cool and breezy GBA-900, from the tough, sports-oriented G-SQUAD line.

Inspired by the invigorating feel of a workout by the sea, the deep cobalt blue and vibrant blue green are firsts for a Casio dial. The colorful dial is set against basic black or pure white in one of two bold, eye-catching designs. Hour and minute hands are finished in silvery vapor deposition to add shimmery style and enhance readability. 

As much function as style, these G-SQUAD GBA-900 watches deliver all you need for the ultimate workout. Just pair with a smartphone to track runs, access the watch’s acceleration sensor and use your smartphone GPS to adjust distances. Adjust once on the smartphone, and track distances traveled using just the watch from then on. Automatically track pace and running times for set distances with auto-lap readings. Connect to the G-SHOCK MOVE smartphone app and easily check activity history and life logs with step count and calories burned on your watch.

Bring your all to daily workouts with a G-SHOCK that is up for whatever you take on.

Case / bezel material: Resin / Bio-based resin
Bio-based resin band
Shock Resistant
Neobrite
Mineral Glass
200-meter water resistance
Double LED light
LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED:White
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Mobile link (Automatic connection, wireless linking using Bluetooth®)
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
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: lap/split timing, distance/pace display, auto/manual lap timing auto lap notification
Memory capacity: Up to latest 45 records (measurement start month, date, hour, minute, lap/split times, total time, distance, average pace, calories burned, lap number, time, distance, average pace of each lap/split)
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
Low battery alert
Power Saving
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping:
Hour, minute, second, am/pm, month, date, day
Accuracy: ±15 seconds per month (with no mobile link function)
Approx. battery life: 2 years on CR2025
Size of case : 51.3 × 48.9 × 16.6 mm
Total weight : 61 g