Features: Built in 2.4G technology, no signal delay. Automatic connected functionality between the controller and the USB receiver. The LED on the contrller and receiver will maintain the signal with its illumination. Connect the receiver to the PC and the LED will begin to flicker rapidly. Once the LED changes from flickering to stable, the second controller will have successfully connected. Built in power saving system will stop the signal when voltage is reduced.( The LED light in the controller will continuously. flash) The user can press 'SELECT' and 'R3'button. simultaneously to turn off the vibration function. When the controller is connected with the receiver but no use takes lace for 5 minutes, it goes into sleep. mode. s: The controller also allows you to simultaneously press 'SELECT,START,L3,R3'button to enable sleep mode. Pressing the 'START'button will reactivate the controller. Operates with 2 x AAA batteries ( batteries not included) Easy to navigate soft touch buttons,ideal for active game plays. Support multi-loop signal functionality. NO interference between controllers. Specifications: Interface Type: USB Model Number: Wireless Controller Gamepad Color: Black Material: Plastic & Electronics Size: 155mm x 98mm Package includes: 2 x Wireless Controller Gamepad(Batteries are not include) 1 x USB receiver