Description\uff1a100% brand new，New high quality5.6mm ultra-slim design with brushed stainless steel:5.6mm at thinnest， scissor key structure and stainless steel plate， brings you comfortable tactilTouchpad and numpad switch design:You can swith between touchpad mode and numpad mode whenever you like， just need a gentle slide.Reliable 2.4GHz wireless connection:Reliable 2.4GHz wireless connection with up to 10m working rangeSystem Requirements:Windows XP\/Vista\/Win7\/Win8\/Andriod\/DOS\/unixUSB port:Compatible with Windows8Size:110mm x 359mm x 5.8mm\uff1bweight:352gPackage included :1 x Wireless Touchpad Keyboard E90801 x Nano receiver2 x AAA battery in parallel