Main features:1. When the voltage decreases, the built-in energy-saving system will stop the signal (the LED light in the controller will continue to flash).2. Users can press the "SELECT" and "R3" buttons simultaneously to turn off the vibration function.3. When the controller is connected to the receiver but in use for 5 minutes, it will enter sleep mode. The controller also allows you to press the SELECT. START, L3 R3 buttons simultaneously to enable sleep mode. Pressing the start button will reactivate the controller.4. Compatible with analog and digital modes5. Requires 2 external AA batteries (this product does not include batteries)Specification:USB double wireless game controller with 2.4G receiverDesigned for PC computers, Android smart TVs, and Windows98/2000/XP/2003/Vista/WIN7 systems.Button service life: 500,000 times.Joystick service life: 500,000 times.Surface treatment: sweat-proof and oil-proof.feature:Plug in the 2.4G receiver on the device and install two AA batteries on the double handles. (This product does not come with batteries). Turn on the handle switch.There will be an automatic connection function between the controller and the receiver, and the LED on the controller will maintain the brightness of the signal:Connect the receiver to the PC and the LED will start flashing rapidly. Once the first controller is connected, the LED will start blinking slowly. Once the LED changes from blinking to solid, the second controller will connect successfully.Package includes:1* wireless game controller1* Nano Receiver1* User Manual