Casio GST-B100 Series 58mm Mens Watch Black

Ref. GST-B100D-1AER

The G-Steel sits at 53.8mm wide and 58.1mm long, with a resin and stainless steel bezel construction that uses layered metal and resin internally for shock resistance. The black dial is dominated by a jet-engine-inspired rotating disc sub-dial at nine o'clock, its turbine-blade form doing real work — indicating stopwatch progress, alarm status, and solar power reserve. Mineral crystal sits above, and Super-LumiNova is applied for low-light legibility. The solid stainless steel bracelet fastens with a one-touch three-fold clasp. Solar cells power Calibre 5513, which adds Bluetooth synchronisation, dual-dial world time across 300 cities, chronograph, countdown timer, and auto-calendar to 2099. Water resistance stands at 200 metres.

Reference

GST-B100D-1AER

Brand

Casio

Case size

14.1mm

Case material

Stainless steel

Dial

Black

Crystal

Mineral

Movement

Solar

Calibre

5513

Functions

Chronograph, Date

Water resistance

00m

Bracelet / strap

Stainless steel bracelet

Strap colour

Silver

Clasp

Three-fold clasp

Lume

Super-LumiNova

Retailer

Goldsmiths