Lenovo Essential Wireless Combo Keyboard & Mouse Gen2 Low Profile Adjustable Tilt Leg Spill Resistant 1600DPI 3 buttons Optical Sensor 18mths Battery This sleek and stylish keyboard and mouse increase productivity while providing wireless convenience. The slim 2.5 zone keyboard has a responsive key feeling and premium typing experience. The standard size mouse compliments the keyboard in design and functionality. Connect compatible Lenovo devices with just 1 nano receiver. 65% post-consumer recycled plastic for both keyboard and mouse. Includes 3-year limited hardware warranty, global product support. Button Life 3 million clicks for left and right buttons Keyboard Key Lifecycle Up to 10 million clicks Mouse Sensor Optical Sensor Hardware Requirements Supported PC with USB-A port Warranty Type Customer Replaceable Unit (CRU) Power Requirement KB: 1.5V AAA*1, MC: 1.5V AA*1 Scrolling 2-way scrolling (Up, Down) Brand Lenovo OS Requirements OS Independent Packed Weight 680g Agency Approvals CB, TUV Mark, CE, cTUVus, FCC, IC, IMDA, WPC, BIS, SIRIM, NBTC-SDOC, SDPPI, NTC, AITI, TRC, NCC, BSMI, MSIP, VCCI, JRF, KVALITET, ICASA, TRA, NTRA, MOC, PTA, ICT, EQM, BOCRA, ARCT, ETA, NCA, POTRAZ, etc. Package Type Brown Box Packed Dimensions (L x D x H) 520 mm x 142 mm x 42 mm Height Mouse: 36.1 mm KB: 21.9 mm Cable Length Mouse: 110.1 mm KB: 422.3 mm Depth Mouse: 61.5 mm KB: 134.5 mm Special/Added Features No Warranty Period Three years Maximum Operating Temperature 40 degrees Celsius (104 degrees Fahrenheit) Minimum Operating Temperature 0 degrees Celsius (32 degrees Fahrenheit) Maximum Relative Humidity (%) 0.95 Minimum Relative Humidity (%) 0.2 Included Accessory Lenovo USB-A Receiver X direction Key Pitch 19.05 mm (0.75 in) Y direction Key Pitch 19.05 mm (0.75 in) Connection Type 2.4G DPI 1600