Product Description 1. **Multi-functional Wireless Touchpad Keyboard:** Wireless keyboard + mouse + touchpad + remote control. Users can present and operate the computer within a 10-meter range, switch slides and screen options, write on the screen, and highlight text and objects. Equipped with a large, highly sensitive touchpad, it enables comprehensive panel touch operation. A keyboard and mouse switching button is located in the lower left corner of the keyboard for easy switching. 2. **USB Powered, Energy Saving:** The mini wireless keyboard and mouse set has a built-in 300mAh lithium battery (rechargeable). A full charge allows for more than a week of continuous use without the hassle of cables. In standby mode, it automatically enters sleep mode after 3 minutes of inactivity or 10 seconds of wireless disconnection. 3. **Backlit and Lightweight:** The compact wireless keyboard features a single-color backlight with three adjustable levels, ensuring clear visibility even in dark environments. Adjustment method: Press the Fn key and spacebar simultaneously. Dimensions: 5.59 * 3.54 * 0.51 inches, Weight: 118 grams. Similar in size to a mobile phone, it easily fits in a pocket, making it very convenient to carry. 4. **[Buzzer Mode/Mute Mode]** This touchscreen keyboard features a buzzer to provide input status feedback. To turn off the buzzer, press the Fn key and the mute key (to the left of the spacebar) simultaneously. You can use this keyboard quietly without disturbing others. 5. **[Multiple System Compatibility]** This compact wireless touchpad keyboard is compatible with PCs, Xbox 360, Android TV, PS3, PS4, smart TVs, smart projectors, and more. It is compatible with Windows XP/10, Vista 7/8/9, Mac, Linux, Android, and other operating systems. The USB host device is compatible with the HID protocol.