Specifications: There are three types for you to choose from; select the one you prefer. This controller can easily remotely control multiple devices, offering convenience and functionality. Portable and lightweight design for easy carrying. IR Learning Function: Five buttons can be programmed to your TV remote keys: 1. Power button – located at the top left corner. 2. 4-color buttons – located at the bottom. Note: Please check if your TV remote supports the NEC protocol for learning. IR Learning Operation Steps: 1. Point the IR emitters of the TV remote and the air mouse toward each other. 2. Press and hold the TV key on the remote for 4–5 seconds until the LED flashes slowly. 3. When the LED flashes slowly, press the key on your TV remote to begin learning. 4. When the remote receives the IR signal, the LED will light up. 5. Repeat steps 1–4 for the remaining 5 keys. 6. Press the TV button to complete 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: Android OS, Mac OS, Linux, Windows Transmission & Control: 2.4G RF Wireless Radio-frequency Technology Sensor: 3-Gyro + 3-Gsensor Key Number: 81 Keys Control Distance: Greater than 5 meters Battery Type: 2 x AAA (Not Included) Working Power: Less than 10mA in working condition Standby Power: Microampere level, nearly zero power consumption 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 differences in lighting and screen settings, the item's color may vary slightly from the images. Slight dimensional variations may occur due to manual measurement. Package Includes: 1 x Wireless Keyboard 1 x USB Receiver 1 x User Manual