Specifications: There are three types for you to choose, you can select one you want. This controller can easily remotely control multiple devices, very convenient. Portable and lightweight, easy to carry. IR Learning Function: There are 5 buttons which could be programmed to your TV remote keys: 1. Power button - locate the top left corner. 2. 4-color buttons - locate the bottom. Note: please check if your TV remote supports the NEC protocol for learning. IR Learning Operation as the Following Steps: 1. Pointing IR emitters of the TV remote and the air mouse to each other; 2. Press and hold the TV key on the remote for 4-5s until the LED flash slowly; 3. When you see the LED flashing slowly, press the key on your TV remote to learn; 4. When the remote receive the IR signal, the LED will be light; 5. The 5 keys could learn following the step 1-4; 6. Press the TV button to finish the learning process. Item Name: Wireless Keyboard Material: Plastic + Silicone Type: Standard Type (without Backlight & Microphone), Backlight Type (without Microphone), Intelligent Voice Type (without Backlight, with Microphone) (Optional) System Support: for Android OS, for Mac OS, for Linux, for Windows Transmission & Control: 2.4G RF Wireless Radio-frequency Technique Sensor: 3-Gyro + 3-Gsensor Key Number: 81 Keys Control Distance: >5m Battery Type: AAA x 2 (Not Included) Working Power: Less than 10mA in the Work Condition Standby Power: Microampere, Almost No Power Language: English Features: Portable, Wireless, Intelligent Size: 17.2cm x 5.2cm x 1.9cm/6.77" x 2.05" x 0.75" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: (Battery Not Included) 1 x Wireless Keyboard 1 x USB Receiver 1 x User Manual