Up for sale is a Casio G-Shock GA100-1A1, part of the Black Out collection. This oversized analog-digital hybrid pairs the classic G-Shock toughness — shock resistance, magnetic resistance, and 200-meter water resistance — with a stealthy all-black aesthetic featuring a negative (reverse) digital display and matte black resin case and band. The large 55 mm case, chunky bezel, and three-dimensional dial with raised indices give this model the bold wrist presence G-Shock is known for. Packed with world time across 48 cities, a 1/1000-second stopwatch with a speed indicator, countdown timer, and four daily alarms, it's equally at home on a deployment or in the gym.
Launched in 2010 as part of the GA-100 series, this module 5081 platform became one of G-Shock's best-selling analog-digital models. The 1A1 Black Out variant — with its murdered-out look and reverse LCD — remains a fan favorite for its tactical, low-profile appearance.
Key Specs:
Brand: Casio Model: GA100-1A1 Collection: G-Shock GA-100 (Black Out) Module: 5081 Case Material: Black resin Case Finish: Matte black Case Size (L×W×H): 55 × 51.2 × 16.9 mm Weight: 70 g Band Material: Black resin Display: Analog-digital (negative/reverse LCD) Glass: Mineral glass Backlight: Auto LED with afterglow Battery: CR1220 (approx. 2-year life) Construction: Shock resistant, magnetic resistant Features: 1/1000-sec stopwatch (100-hr capacity, speed indicator), countdown timer (24-hr, auto-repeat), world time (29 zones / 48 cities + UTC), 4 daily alarms + 1 snooze, hourly time signal, full auto-calendar to 2099, 12/24-hour format, button tone on/off, hand-shift function for clear digital reading Water Resistance: 200 meters / 20 ATM Gender: Men's / Unisex Style: Sport / Tactical / Military Included: Watch only
Condition: Pre-owned good. Matte black resin case and band show surface wear consistent with normal use, no cracks, tears, or deep gouges. Bezel lettering intact. Reverse digital display clear with all segments functioning. Analog hands correctly aligned. LED backlight works. All buttons responsive and all functions operational. Battery may benefit from a fresh replacement depending on age. Keeping accurate time.
Shipping: USPS Ground Advantage or Priority Mail. Tracking included.
Photos: Please review all listing photos carefully before purchasing. Buyer is responsible for reviewing item condition as shown. Questions? Message us before buying.