Rapoo Blade Series Ultra-Slim 2.4Ghz Wireless Keyboard with Touchpad (E9080 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 Switch between touch pad mode and num pad mode whenever you like, just need a gentle slide Keyboard Wireless Technology: 2.4Ghz RF Keyboard/Keypad Host Interface: USB Nano Receiver 2x AAA alkaline batteries (pre-installed)