CAT EYE Fast Charging Cradle 2 USB cable included The cartridge battery (sold separately) can be fast-charged by using the optional charging cradle. The cartridge battery (sold separately) can be used as a mobile battery. Charging time Approx. 3h* *Charging time is approximate values, and will vary by environmental and user conditions. A dedicated charging cable is required to recharge iPhone via this cradle (not included)