| Extra | Color: Silver, Gunmetal, Rose GoldBuild: Stainless Steel 316L
 Weight: 48g
 |  | Colors: Space Black, Silver, GoldBuild: Stainless Steel frame; all-ceramic/sapphire crystal back
 Bluetooth 5.0;
 Requires an iPhone 6 or later with iOS 12 or later;
 Water resistance: Apple Watch 4 should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth.
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