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 KeyboardMaterial: Plastic + SiliconeType: 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 WindowsTransmission & Control: 2.4G RF Wireless Radio-frequency TechniqueSensor: 3-Gyro + 3-GsensorKey Number: 81 KeysControl Distance: >5mBattery Type: AAA x 2 (Not Included)Working Power: Less than 10mA in the Work ConditionStandby Power: Microampere, Almost No PowerLanguage: EnglishFeatures: Portable, Wireless, IntelligentSize: 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&39;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 Keyboard1 x USB Receiver1 x User Manual