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The G-Shock GAC-100-8A Watch in Grey/Black is a simple, yet intricate dial set into the strong G-Shock design results in a timepiece with a distinctive personality all its own. The face utilizes metal parts to create a variety of levels that makes information presented easy to read. Features include a large screw lock crown, 1/20-second analog chronograph, date display and more. Grey resin band analog with a black and yellow face. G-Shock detailing throughout.


  • Magnetic Resistance
  • 1/20 Second Chronograph
  • Screw Lock Crown
  • Shock Resistant
  • 200 Meter Water Resistant
  • Magnetic Resistant
  • Neo-brite Luminous Hands
  • 1/20 second chronograph 
    Measuring capacity: 11:59'59.95" 
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Accuracy: +/- 20 seconds per month
  • Battery: SR927SW
  • Approx. battery life: 3 years
  • Module 5277

Size of case/total weight
GAC100 55.0 x 52.7 x 16.6mm / 72.9g
GAC100RG 55.0 x 52.7 x 16.6mm / 72.9g

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