Casio G-Shock Hidden Glow GA-2100HDS-7AER

Casio G-SHOCK GA-2100HDS-7AER – Coastal style with carbon-reinforced durability

Blend the freshness of the ocean with G-SHOCK’s uncompromising toughness in the Casio GA-2100HDS-7AER. Inspired by summer seas, this model reflects the changing coastal scenery – from bright sunshine to tranquil twilight – while offering a lightweight, slim, and highly durable construction.

Design that glows like the sea

The blue phosphorescent dial glows at dusk, reminiscent of bioluminescent plankton in the ocean. Combined with a white-and-blue color scheme, the watch captures the natural rhythm of the shoreline – ideal for both relaxed leisure and everyday wear.

Lightweight, slim, and exceptionally durable

The Carbon Core Guard structure provides strength without added weight:

• Shock-resistant construction
• Water resistance up to 200 meters
• Mineral glass and bio-based resin strap – eco-friendly and comfortable
• Weighs just 51 g – virtually unnoticeable on the wrist all day
• Neobrite coating for nighttime visibility

Precision and functionality for everyday life

Whether you're at the beach or in the city, the GA-2100HDS-7AER keeps you on time and in control:

• World time: 31 time zones (48 cities + UTC), daylight saving on/off
• 1/100-second stopwatch (split time, total time, placement)
• Countdown timer up to 24 hours
• 5 daily alarms + hourly time signal
• Dual LED illumination: separate lights for analog and digital displays (1.5 or 3 seconds adjustable)
• Fully automatic calendar (until 2099)
• 12/24-hour time formats, hand shift function, ±15 sec/month accuracy
• Mute function to silence button tones

Technical specifications

• Case size: 48.5 × 45.4 × 11.8 mm
• Weight: 51 g
• Glass: Mineral glass
• Band fit: 145–215 mm
• Battery life: approx. 3 years (SR726W × 2)
• Display: Analog and digital