¹Fast Charging requires the Galaxy Watch5 Series or later and a 10W power adapter or higher (sold separately). Normal charging speeds apply with earlier Galaxy Watches and lower power adapters. Use only Samsung- approved power adapters; to avoid injury or damage to your device, do not use incompatible, worn or damaged batteries, chargers or cables. ²When charging Galaxy Watch7, charger can charge up to 45% in 30 minutes. When charging Galaxy Watch Ultra or Galaxy Watch5 Pro, charger can charge up to 35% in 30 minutes.