G SHOCK Full Metal 2100 Series (GM B2100SD 1C) White Heather Grey adding depth and vibrancy to adding depth and vibrancy to the fragrance Discover an extraordinary feeling of pure freshness Specifications battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Accuracy Accuracy: ±15 seconds per month (with no mobile link function) Other features Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents