Description
CASIO GMA-P2100SA-1A1ER is a compact unisex watch from the G-Shock series, inspired by the legendary octagonal “CasiOak” design in a slimmer, lighter form. The black case with bright neon-red accents on the hour markers and hands creates an expressive sporty look, while the phosphorescent coating provides noticeable glow in the dark. The thin, lightweight case — just 11.2 mm thick and 40 g in weight — makes the watch comfortable for all-day wear, while the bio-based resin bezel and strap underscore the model’s environmental consciousness.
The 40.2 × 11.2 mm case is made of bio-based resin and complemented by a matching black bio-based resin strap. The model features a Casio 5730 quartz movement with an analog-digital display.
Advantages:
➤ Casio 5730 quartz movement (analog-digital)
➤ black design with neon-red accents
➤ phosphorescent hands and markers coating (Neobrite)
➤ dual time
➤ world time
➤ 1/100-second stopwatch (up to 24-hour capacity): 1st and 2nd place, split time
➤ countdown timer
➤ alarms
➤ auto-calendar (day, date, month)
➤ 12/24-hour format
➤ LED backlight
➤ shock-resistant construction
➤ octagonal case and strap made of bio-based resin
➤ mineral glass
➤ water resistance 200 m (20 ATM)
➤ battery life approx. 3 years (CR1025)
➤ accuracy ±15 sec/month
➤ band size 145–190 mm
➤ case size 40.2 × 11.2 mm
➤ weight only 40 g
CASIO GMA-P2100SA-1A1ER is a combination of iconic CasiOak design, a vibrant sporty accent, and a lightweight comfortable case, making this watch an excellent choice for an active and stylish lifestyle.



















