. Specs & Details Dimensions Mouse Dimensions Height 107 mm Width 59 mm Depth 26.5 mm Weight (including battery) 100 g Keyboard Dimensions Height 143.9 mm Width 373.5 mm Depth 21.3 mm Weight (including battery) 558 g Nano receiver Height 14.4 mm Width 18.7 mm Depth 6.1 mm Weight 1.8 g Technical Specifications Mouse Sensor Technology High Precision Optical Tracking Sensor resolution 1000 DPI Number of Buttons 3 Scroll Wheel Yes- Mechanical Scroll Buttons Middle Button Unifying ready mouse No Unifying ready receiver No Battery life Mouse 18 months Battery type mouse 1xAA Keyboard Battery life Keyboard 36 months Battery type keyboard 2xAAA Wireless operating distance 10 m 1Wireless range may vary due to environmental and computing condition Wireless technology Logitech Nano Receiver Part Number Graphite English 920-009204