Specifications: Choose from three available types. This controller allows convenient remote control of multiple devices. Portable and lightweight design for easy portability. IR Learning Function: Five programmable buttons compatible with TV remote keys: 1. Power button – located at the top left corner. 2. Four-color buttons – located at the bottom. Note: Verify that your TV remote supports the NEC protocol for learning functionality. IR Learning Operation Steps: 1. Align the IR emitters of the TV remote and the air mouse facing each other. 2. Press and hold the TV key on the remote for 4–5 seconds until the LED flashes slowly. 3. While the LED is flashing slowly, press the desired key on your TV remote to initiate learning. 4. Once the remote receives the IR signal, the LED will illuminate. 5. Repeat steps 1–4 for up to five programmable keys. 6. Press the TV button to complete the learning process. Item Name: Wireless Keyboard Material: Plastic + Silicone Type: Standard (without backlight & microphone), Backlight (without microphone), Intelligent Voice (without backlight, with microphone) – Optional System Support: Android OS, Mac OS, Linux, Windows Transmission & Control: 2.4G RF wireless 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 during operation Standby Power: Microampere level, minimal 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: - Color may vary slightly due to lighting and screen settings. - Slight dimensional variations may occur due to manual measurement. Package Includes: (Battery not included) 1 x Wireless Keyboard 1 x USB Receiver 1 x User Manual