Casio Carbon Core Octagon Series 48.5mm X 45.5mm Mens Watch

Ref. GA-2100-1AER

The GA-2100-1AER wears its octagonal shape quietly, with a slim profile at 11.8mm thick and a resin case built around a carbon core guard structure for shock resistance. The black dial sits behind mineral glass, with analogue hands that shift aside automatically to clear the way for the digital display beneath. Functions include world time across 31 time zones, five daily alarms, a 1/100-second stopwatch with split timing, and a 24-hour countdown timer. A double LED provides adjustable backlight duration. The resin strap fits wrists from 145 to 215mm, and water resistance is rated to 200 metres.

Reference

GA-2100-1AER

Brand

Casio

Case size

45.4mm

Case material

Resin

Dial

Black

Crystal

Mineral

Movement

Quartz

Functions

Digital display, Stopwatch, Alarm, Countdown timer, World time, Backlight

Water resistance

200m

Bracelet / strap

Rubber strap

Strap colour

Black

Retailer

Goldsmiths