Fast Charging Support:Get charged up and ready to go. Don't let alow batteryslow you down. Get fast-charging, time-saving convenience with the Galaxy Watch Charger. Spend less time plugged in and more time on the go with a fast charge that gets your Galaxy Watch7 up to 45% in just 30 minutes. Magnetic Design: Simple, secure charging. Hold your charger up to your Watch and let the magnets snap into place for easy charging. Fast 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.When 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.