Compatible with all Wear OS devices SAMSUNG: Galaxy Watch Ultra 2 - Ultra, Watch 9 - 8 - 7 - 6 - 5 - 4 (Classic & FE) GOOGLE: Pixel Watch 5 - 4 - 3 - 2 - 1 ONEPLUS / OPPO: OnePlus Watch 4 - 3 - 2R - 2, OPPO Watch X3 - X2 - X XIAOMI: Watch 5 - 2 Pro - 2 FITBIT: Fitbit Ace LTE