Connectivity Technology: Bluetooth, Radio Frequency Special Feature: Wireless, Bluetooth, Optical Compatible Devices: Laptop, Personal Computer, Tablet, SmartphoneAbout this itemSwitch between Bluetooth 3.0, 4.0 and 2.4GSmart switch between multiple devicesMultimedia hotkeys Multimedia hotkeys give you quick access to functions like media player, homepage, volume adjustment and more.Spill-resistant design Spill-resistant keyboard design, so you do not have to worry about the keyboard malfunctioning after accidental spills.1300 DPI t high-performance racking engine Enjoy accurate and smooth cursor control with the 1300 DPI invisible tracking engine.Precision on nearly every surface The high-performance optical engine enables you to use mouse on virtually any surface. Enjoy a high-speed response and unrivaled accuracy.9-month battery life With Rapoo's latest energy saving technology and power switch, you can use your keyboard and mouse without power interruption for up to 9 months.Silent design This is a wireless noiseless keyboard mouse combo,help you create a quiet working environment.Technical DetailsBrand‎RapooManufacturer‎Rapoo, Shenzhen RAPOO Technology Co.Limited Address: 22,Jinxiu Road East, Pingshan District,Shenzhen,ChinaModel‎8000M-BlackProduct Dimensions‎36.4 x 14.8 x 3.4 cm; 400 GramsBatteries‎2 AA batteries required. (included)Item model number‎8000M-BlackOperating System‎WindowsCompatible Devices‎Laptop, Personal Computer, Tablet, SmartphoneSpecial Features‎Wireless, Bluetooth, OpticalMounting Hardware‎Wireless keyboard, Wireless mouse, receiver, 2 AA alkaline batteries(pre-installed), Quick start guideNumber of items‎1Power Source‎Battery PoweredBatteries Included‎YesBatteries Required‎YesBattery cell composition‎AlkalineKeyboard Description‎WirelessConnector Type‎Bluetooth, Radio FrequencyMovement Detection Technology‎OpticalHand Orientation‎RightManufacturer‎RapooCountry of Origin‎India