Charging Dock Cradle with USB Cable Compatibility: Designed for Samsung Galaxy Gear S3, Frontier and Classic Method: Sensing mode with magnets Power Protection (PTC) Accessory Only; device not included Sku: s.c9 StrapsCo charger is light in weight and compact in size, which is portable and convenient. it charges the watch quickly, efficiently. Keep your Samsung Galaxy Gear S3 safe from over-current or over-charging when connected the power source.