Product Description Features: 1.92-key, 2.4GHz wireless keyboard with touchpad. 2. Mini keyboard with multimedia control keys and PC game control keys 3. Ergonomic handheld design, easy to carry and operate ), the lithium battery model is a built-in lithium battery. Description: 1. Wireless Mini Keyboard 2 in 1 Keyboard Amplifier; Touchpad Combo with Multimedia Control Keys. The 2.4 GHz wireless connection makes it easy to connect and control your smart devices, allowing an operating range of up to 49 feet (15 meters). 2. Universal Compatibility Compatible with PC, Android TV Box, Smart TV, HTPC, Xbox360/Ps3, Ps4, Laptop, Tablet, etc. 3. Power Saving Built-in rechargeable polymer lithium-ion battery provides longer usage time. With automatic sleep wake-up function, save power when not in use. Dry battery models require 2 AAA batteries (not included). 4.RGB Backlight It has 3 colors - RGB backlight, just hold "Fn" and press "F2" to easily change the color. The streamlined design makes it easy to handle and use, and the high-sensitivity touchpad features a 360-degree flip design.