?Extend 300% Battery Life? This apple watch charger has a built-in 4000mAh battery that can charge the apple watch without having to plug it into another power source. Super strong battery life, this apple watch charger can fully charge an apple watch 3-4 times. ?Compatible? Apple watch charger designed for apple watches,Compatible with apple watch SE,7,6,5,4,3,2,1,Nike+(38mm 40mm 42mm 44mm). This power bank built with a type-C port for both input and output, and if you have a Type-c to Lighting cable, this charger can also charge your iPhone if you need it. ?Wireless High-Speed Charging? Apple watch charger offers original high speed charging for your apple watch series, fully charges the apple watch within 2.5-3hours. And it takes only 3.5 hours to fully charge the watch charger by using a charging cable (Included in the package). ?CHARGE ON THE GO? This apple watch power bank is small and compact, you can carry this compact portable charger out easier rather than taking long and oversized charger dock. Just slide it into your pocket or hook it on the bag. The hang rope design allows you to hang on the bag to prevent loss when you travel. ?Strong Magnetic Suction Induction Charging? Built-in latest magnetic adsorption module, Charge immediately after contact. No shaking, no falling, very stable.