Built frequency 2.4GHz technology inside. Built digital and analog model technology inside. Built double high-quality motor for mega vibration. External double AA batteries power designed, Endurance capacity of more than 10 hours (battery not included). Lower voltage indication; In order to stable playing game, controller will be automatically shut down the Motor when lower voltage. Support Multi-loop signal; No mutual interference when simultaneous control (Max accommodating 20 sets controller). Support operating distance of up to 8 -10 meters (max 14 meter).