The G-Shock GMAS2100-1A is a women's watch that downsizes the popular GA2100 model, offering a simple, slim, and compact design. It features the distinctive octagonal bezel and carbon core guard structure, now in a smaller configuration.

• Colorway: Black with Rose Gold Accents
• Case/bezel material: Carbon/Resin
• Band material: Resin
• Glass: Mineral Glass
• Features: Shock Resistant, Neobrite
• Structure: Carbon Core Guard
• Case size: 46.2×42.9×11.2mm
• Total weight: 41g
• Battery life: Approx. 3 years (SR726W × 2)