CASIO
G-SHOCK GBA900UU-5A
G-SHOCK GBA900UU-5A
Casio G-Shock MOVE GBA-900 Series - Model GBA900UU-5A
The GBA900UU-5A is a sports-focused digital-analog hybrid model from the G-SHOCK MOVE series, designed for athletes and active individuals who need precision tracking and smartphone connectivity. With a rugged build, step tracking, and Bluetooth® smartphone link features, this watch is the perfect companion for training and fitness.
Design Overview
The GBA900UU-5A features a modern, urban-inspired design with a durable resin construction. Its large, high-contrast digital display ensures easy readability, while the soft urethane band offers superior comfort for long training sessions.
Key Highlights
- Smartphone connectivity via Bluetooth® for activity tracking and app-based control.
- Step tracking with calorie and distance measurement based on step count.
- Rugged, shock-resistant build with 200-meter water resistance.
- Super Illuminator LED backlight for clear visibility in low-light conditions.
- Comfortable and durable band designed for prolonged wear.
Features
Case & Band
- Case Dimensions: 51.3 × 48.9 × 16.6 mm
- Material: Resin
- Band: Resin Band
- Weight: 61 g
Durability
- Shock-resistant construction ensures high durability.
- Water resistance: 200 meters, suitable for water activities.
Exterior
- Glass: Mineral glass for scratch resistance.
- Compatible Band Size: Fits wrists 145 to 215 mm.
Timekeeping
- Dual time with home city time swapping.
- Analog: Hour, minute.
- Digital: Hour, minute, second, am/pm, month, date, day.
Training & Tracking Features
- Step tracking with calorie and distance calculation.
- Lap memory storage for up to 45 records, including date, time, lap/split times, distance, pace, and calories burned.
- Auto lap function for automatic distance tracking.
Timers & Alarms
-
Countdown Timer:
- Interval measurement with up to five time settings.
- Measuring unit: 1 second.
- Input range: 00'00" to 60'00" (1-second increments).
- Auto-repeat and 5-second countdown auto start.
-
Stopwatch:
- 1/100-second stopwatch
- Measuring capacity: 23:59'59.99".
- Modes: Elapsed time, split time, lap time, pace display.
- Auto/manual lap timing with lap notification.
-
Alarms:
- 5 daily alarms with an hourly time signal.
Lighting
- Double LED light (Super Illuminator) for both the face and digital display.
- Selectable illumination duration: 1.5 seconds or 3 seconds, with afterglow.
- Light Color: LED White.
Smartphone Link/App Connectivity Features
- Smartphone Link: Wireless Bluetooth® connection for automatic syncing and activity tracking.
- Compatible App: G-SHOCK MOVE.
Additional Features
- Full auto-calendar (to the year 2099).
- Energy-saving Power Saving mode (display goes blank to save power when left in the dark).
- Battery Life: Approx. 2 years on CR2025.
- Mute Feature: Button operation tone on/off.
- Hand Shift Feature: Hands move out of the way to provide an unobstructed view of digital display content.
- Airplane Mode: Disables all wireless communication.
- Low Battery Alert: Notifies when power is low.
Summary
The GBA900UU-5A is an ideal watch for fitness enthusiasts, blending G-SHOCK’s renowned toughness with modern smart features. With advanced tracking capabilities, a stylish urban design, and robust durability, this model is perfect for those who want both function and fashion in their timepiece.
For more details, visit the official Citizen website here.
Warranty:
- The watch is covered by a warranty, providing assurance and protection for your purchase.
▶︎Processing Time & Shipping Policy
▶︎We only carry G-SHOCK USA products.
▶︎Unfortunately, we DO NOT ship internationally.
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Explore Your Favorite G-SHOCK Watches
Explore our current selection of G-SHOCK watches. If you don’t see your preferred model, check the G-SHOCK USA website, note the model number, and contact us via email or phone(415-567-2400) to place your order. Ask about our special deals!
Please note:
- We only carry G-SHOCK USA products.
- Unfortunately, we DO NOT ship internationally.

Trusted Since 1967
Our owner, Asuka Saito, is certified by both Gemological Institute of America (GIA) and Cultured Pearl Association of America (CPAA), and we also have a GIA-certified appraiser on staff. Asuka is also a color specialist, certified as a TC Color Therapist and Sensational Color.