Rapoo Blade Series Compact Size Ultra-Slim 2.4Ghz Wireless Keyboard with Touchpad (E2700 Black) ultra-slim design of 5.6mm at thinnest, scissor key structure and stainless steel plate, brings you comfortable tactile No extra mouse needed when you have the touchpad keyboard Reliable 2.4GHz wireless connection with up to 10M working range Hotkeys provides a better and easier way to surf the internet and listen to music Keyboard Wireless Technology: 2.4Ghz RF Keyboard/Keypad Host Interface: USB Nano Receiver 2x AAA alkaline batteries (pre-installed)