Casio G-Shock GBA-900-1A6

Product Overview

The GBA-900 series is engineered for those who demand rugged G-SQUAD toughness paired with the precision of digital health tracking. This analog-digital powerhouse bridges the gap between a traditional timepiece and a dedicated fitness tracker, making it an essential tool for urban athletes and runners alike.

By leveraging Bluetooth® Smartphone Link, the GBA-900 utilizes your phone’s GPS to calibrate its internal accelerometer. Once initial measurements are set, the watch accurately tracks distance, speed, pace, and calories burned entirely on its own. The integration with the CASIO WATCHES app allows you to manage workouts, check activity history, and visualize exercise intensity across five distinct stages, ensuring you hit your progress goals with every session.

Major Features

• Precision Training Measurements: Calculates distance, speed, and pace. Features an Auto Lap function that automatically keeps track of times over set distances.

• Smartphone Link (Bluetooth®): Offers automatic time adjustment, easy watch configuration, and seamless data transfer for workout management.

• Lifelog Tracking: Monitors daily step counts and caloric expenditure—including basal metabolic rate—to provide a comprehensive view of your health.

• Double LED Super Illuminator: High-brightness white LEDs for both the face and digital display, featuring an auto-light switch for hands-free visibility during night runs.

• Soft Urethane Band: Crafted for maximum comfort and a high-quality fit, ensuring the watch remains secure during high-intensity movement.

• 20-Bar Water Resistance: Fully reliable for high-impact water sports and extreme outdoor environments.

Technical Specifications

Basic Information

• Case Size (L× W× H): 51.3 × 48.9 × 16.6 mm

• Weight: 61 g (Aerodynamic and lightweight for peak athletic performance)

• Material: High-durability Resin case and bezel with a soft Resin Band

• Construction: Shock Resistant

• Power Supply: Approx. 2-year battery life on CR2025

• Glass: Tough, scratch-resistant Mineral Glass

Advanced Fitness Features

• Distance Correction: Uses smartphone GPS to refine accelerometer accuracy for reliable solo tracking.

• Stopwatch: 1/100-second precision with a 45-record memory for lap/split times and average pace.

• Interval Timer: Supports up to five time settings for circuit training with auto-repeat functionality (up to 20 times).

• MIP LCD Technology: Features a high-contrast Memory-in-Pixel display for the clearest reading of digital data yet.

• Hand Shift Feature: Hands move out of the way with a push of a button to provide an unobstructed view of training metrics.

App Connectivity Features

• Activity History: Review past runs and step data to track long-term fitness trends.

• Simple Notifications: Stay informed with tone alerts for essential smartphone updates.

• Phone Finder: Easily locate a misplaced smartphone with an audible signal triggered from the watch.

Brains, Brawn, and Comfort

The Urban Athlete's Edge

The GBA-900 is designed for focus. Its architectural face features raised indices and bold hands that provide an immediate analog check of the time, while the digital windows deliver deep technical data. The addition of a 24-hour countdown timer and five daily alarms makes it a versatile companion for both a structured training regime and a busy urban lifestyle.

Engineered for Endurance

At just 61 grams, this watch is built to disappear on your wrist during long-distance endurance runs. The resin components are designed to withstand sweat and environmental exposure, while the shock-resistant construction ensures that a drop or impact never interrupts your training flow.