Universal RF Wireless Full-size (100%) Numeric keypad Mouse included Black 3 pc(s) Keyboard Certification CB, TUV marking, 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 Key travel distance 1.91 cm Keyboard keys operating life 10000000 million characters Numeric keypad Yes Keyboard form factor Full-size (100%) Pointing device No Device interface RF Wireless Connectivity technology Wireless Recommended usage Universal Design Product colour Black Backlight No Power Service life of battery 15 month(s) Number of batteries (keyboard) 1 Keyboard battery type AAA Power source type Battery Mouse Buttons durability (million clicks) 3000000 Number of batteries (mouse) 1 Mouse battery life 18 month(s) Mouse battery type AA Scroll type Wheel Scroll Yes Buttons type Pressed buttons Buttons quantity 3 Movement resolution 1600 DPI Movement detection technology Optic