This version sports a full black styling: a matte black resin case and strap paired with a black ion‑plated stainless steel bezel for a stealthy, understated look. It features a sophisticated octagonal metal frame over a sleek digital-analog display, making it a standout in the 2100 “CasiOak” series

Official Features (If Authentic)

Shock Resistant & 200m Water Resistance ensures rugged everyday reliability
Analog + Digital Display: Minimalist black dial with analog hands and a small digital LCD.
Material & Build: A stainless steel bezel ion-plated in black sits on a lightweight yet durable resin body (~49.3 × 44.4 × 11.8 mm; ~72 g)
Glass: Hardened mineral glass resists scratches.
Functions:
- 1/100-second stopwatch, countdown timer (up to 24 hours), 5 daily alarms
- World time for 31 zones (48 cities + UTC)
- Full auto-calendar (up to 2099)
- Hand Shift feature moves seconds hand to view digital display
- Double LED Super Illuminator for nighttime legibility
- Neobrite luminous coating for glow-in-dark visibility

ANALOG-DIGITAL 2100 Series GM-2100G-1A9-a Full Black