Casio Full Metal 2100 Chrono 51.5mm Mens Watch Black

Ref. GMC-B2100D-1AER

The octagonal bezel — a shape rooted in G-SHOCK's original 1983 design — defines the silhouette here, reinterpreted entirely in stainless steel with a black finish. The bezel itself receives a circular hairline treatment on its flat upper surface and a mirror polish along the angled edges, the two finishes working against each other to give the case depth. At 51.3 mm lug-to-lug and 46.3 mm wide, it wears with some presence, though the 12.4 mm thickness keeps it relatively trim. The all-analogue black dial carries three chronograph sub-dials arranged at 6, 9, and 12 o'clock, alongside a day-date window. Neobrite luminous coating covers the hands and markers. Power comes from Casio's Tough Solar system, with Bluetooth pairing handling world time across roughly 300 cities. The solid stainless steel bracelet, also finished in black, fastens with a one-touch three-fold clasp. Water resistance stands at 200 metres.

Reference

GMC-B2100D-1AER

Brand

Casio

Case size

51.3mm

Case material

Stainless steel

Dial

Black

Crystal

Mineral

Movement

Solar

Calibre

5733

Functions

Chronograph, GMT, Date

Water resistance

00m

Bracelet / strap

Stainless steel bracelet

Strap colour

Silver

Clasp

Three-fold clasp

Lume

Luminous

Retailer

Goldsmiths