The Casio G-SHOCK GMD-B300-1DF-B is a compact digital sports watch designed for active lifestyles and everyday fitness. Featuring a black bio-based resin case and band, Bluetooth® smartphone connectivity, step tracking, and G-SHOCK's legendary shock-resistant construction, it combines advanced fitness features with exceptional durability. With 200-meter water resistance, automatic time adjustment, and activity tracking through the CASIO WATCHES app, it is an ideal companion for walking, running, workouts, travel, and daily wear. Official specifications are based on Casio's official product documentation.
Key Features
Shock Resistant
200-meter water resistance (20 Bar)
Bluetooth® smartphone connectivity
Step Tracker (3-axis accelerometer)
Activity Log
Step Goal Progress Display
Dual LED Super Illuminator
World Time
Stopwatch
Countdown Timer
5 Daily Alarms
Full Auto Calendar
Phone Finder
Timekeeping
Displays:
Hour
Minute
Second
Month
Date
Day
Step Count
Automatic time adjustment via Bluetooth®
World Time (38 time zones)
12/24-hour time formats
Full auto-calendar
High-accuracy quartz movement
Design & Materials
Bio-based resin case
Bio-based resin bezel
Black bio-based resin band
Buckle closure
Mineral glass
Shock-resistant construction
Slim, lightweight profile
Comfortable design for all-day wear and exercise
Colors
Case: Black
Bezel: Black
Band: Black Bio-based Resin
Display: Negative LCD
Buttons: Black
Note: The GMD-B300-1DF-B combines G-SHOCK's legendary toughness with Bluetooth® connectivity and an integrated step tracker in a sleek all-black design made with eco-friendly bio-based resin, making it ideal for both fitness and everyday use.
Power
Battery Type: CR2016
Approximate Battery Life: 2 Years
Water Resistance
200 meters (20 Bar)
Suitable for:
Daily hand washing
Showering
Swimming
Snorkeling
Recreational scuba diving
What's Included
Casio G-SHOCK GMD-B300-1DF-B Watch
Original Casio Box
Instruction Manual
Warranty Card (provided by the authorized distributor)