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. 4colors buttons-Locate the bottom  Note: Please check if your TV remote supports the NEC protocol for learning.  Systerm Support  1. Android OS  2. Mac OS  3. Linux  4. Windows  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 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 receiver the IR signal,the LED will be solid.  5. The 5 keys could learn following the step 1-4,  6. Press the TV button to finish the learning process.  Specification  1) Transmission and control: 2.4 G RF wireless radio-frequency technique;  2) Sensor: 3-Gyro + 3-Gsensor;  3) The key number:81 keys;  4) Control distance: Greater than 5m;  5) Battery Type: AAA * 2(not included)  6) Working Power: Less than 10mA in the work condition;  7) Standby Power: Microampere, almost no power  8) Material: PC  9) Size: 172 * 52 * 18mm;  10) Weight: About 100g.  color:black  NOTE1: This type of air mouse can't control the satellite channels.  NOTE2: Only 5 keys can be programmed.  NOTE3: This remote control is not suitable for Smart TV  NOTE4: When you want to use backlight function, please press the light button to turn on the backlight  Package Contents:  1 * MX3 air mouse  1 * USB Wireless Receiver  1 * User Manual  Only the above package content, other products are not included.  Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.