Complete interference-freeN/Awireless connectivityN/AAimed at improving the workflow of professionals Rapoos Multi-Mode Wireless technology ensures full compatibility and automatic pairing. Whether your device supports Bluetooth 3.0 or prior Bluetooth 4.0 or beyond or you wish to connect via the 2.4 GHz Wi-Fi dongle you can be sure the E9100M keyboard is compatible.N/AN/AThe smart switch between Bluetooth 3.0 4.0 and 2.4 GHz ensures stable wireless transmission with up to 10 meters and 360 coverage. You can also still use your desktop set regardless of USB port shortage or the loss of receiver.N/AN/ASwitch among multiple connected devices in one clickN/AConnect to all your devices with E9100M. It automatically pairs the working device connects to multiple devices and easily switches among them in a click of a button. Multi-tasking across devices has never been easier.N/AN/AUltra-slim keyboard with aluminum alloy base and accurate scissor key structure N/ASlimline and rugged the award-winning ultra-slim 4.9 mm design makes this keyboard a real eye-catcher while the anodized aluminum housing offers stability and durability. The accurate scissor key structure enables easy and comfortable tactile experience.N/AN/AUp to 12 months battery lifeN/AWith Rapoos energy-saving technology and power switch you can use your keyboard without power interruption for up to 12 months.