Fangrui Product Details 1. Km-029 2.4g One For Two Doubles Wireless Controller Support Pc Linux Android Tvbox 2. Designed For Pc, Linux, Android Smart Tv, Windows982000 Xp 2003 Vistawindows 7 81011...compatible. 3. How To Connect: 4. - Plug In The 2.4g Receiver On The Device, And Install Two Aaa Batteries On The Dual Handles. (battery Not Included). Press And Hold The Home Button For 2 Seconds. 5. - There Will Be An Automatic Connection Between The Handle And The Receiver, And The Led On The Controller Will Maintain The Brightness Of The Signal: 6. - Connect The Receiver To The Pc, The Led Will Start Blinking Fast. After The First Controller Is Connected, The Led Will Start Blinking Slowly. Once The Led Goes From Blinking To Steady, The Second Controller Will Connect Successfully. 7. Precautions: 8. When The Voltage Drops, The Built-in Energy-saving System Will Stop The Signal (the Led Light In The Controller Will Keep Flashing). 9. Compatible With Analog And Digital Modes 10. Requires 4 External Aaa Batteries (this Product Does Not Include Batteries) 11. Product Size: 160 X 105 X 65mm 12. Weight: A Pair Of Controllers Weighs 278g 13. Packing List: 1 Usb Receiver + 2 Handles