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Grey resin G-Shock watch with black digital display and grey resin band

CASIO

CASIO GBD800UC-8 watch 49.5 mm grey resin 200 m water resistance

SKU CH-Z2NZ-3G021 MPN GBD800UC-8

A shock-resistant digital watch with solar power, Bluetooth connectivity and 200-metre water resistance

  • MaterialStainless Steel
  • MovementQuartz
  • ColorGrey
  • ResizableYes
  • AdjustableYes
  • Dial ColorBlack
  • 200 m water resistance for serious swimming
  • Tough Solar charging keeps the watch running without battery changes
  • Bluetooth link to the G-SHOCK Connected app for activity tracking
  • 3-axis sensor counts steps automatically during daily wear
  • Super Illuminator LED backlight with 1.5 s or 3 s selectable duration

Purpose and audience

The GBD800UC-8 is a digital G-Shock built for men who want a tough daily watch with fitness tracking and smartphone linking. Its 49.5 mm resin case and 200 m water resistance suit swimming, outdoor work and heavy knocks. The grey resin band and black dial keep the look neutral for casual or uniform wear. Solar charging means no battery changes for the core functions.

Thermals noise power

Solar power handles the movement, backlight and Bluetooth radio without a mains charger. The Super Illuminator LED offers 1.5 or 3 second illumination on demand or via auto light switch. A power-saving mode puts the acceleration sensor to sleep after inactivity, extending reserve charge. No fan, pump or active cooling exists, so the watch runs silent.

Build integration

The 54.1 x 48.6 x 15.5 mm case fits wrists that accept a 49.5 mm diameter; the resin strap is adjustable and resizable for a secure fit. Mineral crystal and shock-resistant construction protect the module from impacts. Bluetooth mobile link syncs step counts, world time, stopwatch, timer and calendar data to the G-Shock Connected app. Buyers who need a heart-rate sensor or onboard GPS will not find them here.

Highlights

  • 200 m water resistance for serious swimming
  • Tough Solar charging keeps the watch running without battery changes
  • Bluetooth link to the G-SHOCK Connected app for activity tracking
  • 3-axis sensor counts steps automatically during daily wear
  • Super Illuminator LED backlight with 1.5 s or 3 s selectable duration

Specifications

BrandCASIO
ModelGBD800UC-8
Part NumberGBD800UC-8
MaterialStainless Steel
MovementQuartz
ColorGrey
ResizableYes
AdjustableYes
Dial ColorBlack
DisplayDigital
Band MaterialResin
GenderMen's
AgeAdult
ConditionNew
Case Diameter49.5
Case MaterialResin
CrystalMineral
Water-Resistant200

Questions about this item

How do I pair the watch with the G-SHOCK Connected app and what step is often missed?

Enable Bluetooth on the phone, open the G-SHOCK Connected app, and follow the pairing prompts; the step often missed is granting the app location permission, which is required for the Bluetooth link to complete.

What maintenance will the solar-powered module and resin band need over time?

The Tough Solar cell recharges from light; keep the face clean for best charging. The resin band can be washed with mild soap and water, and the strap holes allow resizing as needed.

At what depth does the 200 m water-resistance rating reach its practical limit for continuous use?

The 200 m rating covers swimming and surface water sports; it is not intended for scuba diving or prolonged high-pressure exposure beyond recreational depths.

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