The Casio G-SHOCK GMA-S2100-1ADR-B is a compact analog-digital watch that combines the iconic octagonal G-SHOCK design with a sleek, lightweight profile. Designed for smaller wrists without compromising durability, it features a black resin case and band, Carbon Core Guard construction, and G-SHOCK's legendary shock resistance. With 200-meter water resistance, dual LED illumination, and versatile timekeeping functions, it is ideal for everyday wear, sports, travel, and outdoor adventures. Official specifications are based on Casio's official product documentation.
Key Features
Shock Resistant
Carbon Core Guard structure
200-meter water resistance (20 Bar)
Analog and digital display
Lightweight compact design
Dual LED Super Illuminator
World Time
1/100-second stopwatch
Countdown timer
5 daily alarms
Full auto-calendar
Hand Shift feature
Timekeeping
Displays:
Hour
Minute
Second
Day
Date
Analog and digital time display
World Time (31 time zones, 48 cities + UTC)
12/24-hour time formats
Full auto-calendar (to 2099)
High-accuracy quartz movement (±15 seconds per month)
Design & Materials
Carbon Core Guard resin case
Resin bezel
Black resin band
Buckle closure
Mineral glass
Shock-resistant construction
Compact octagonal profile
Lightweight and comfortable design
Colors
Case: Black
Bezel: Black
Band: Black Resin
Dial: Black
Hour Markers: White with luminous coating
Hands: White with luminous coating
Note: The GMA-S2100-1ADR-B features the iconic compact octagonal "CasiOak" design in a timeless all-black finish, offering the legendary durability of G-SHOCK in a slimmer, lighter case designed for a comfortable fit.
Power
Battery Type: SR726W ×2
Approximate Battery Life: 3 Years
Water Resistance
200 meters (20 Bar)
Suitable for:
Daily hand washing
Showering
Swimming
Snorkeling
Recreational scuba diving
What's Included
Casio G-SHOCK GMA-S2100-1ADR-B Watch
Original Casio Box
Instruction Manual
Warranty Card (provided by the authorized distributor)
