. English keys only!!! PN: 920-011004 Wireless Connectivity Logi Bolt, Bluetooth Wireless Range 10 meters Service Life 5 million clicks Reliability MTTF > 150K Hours Mean Time To Failure of electrical components Warranty 2-year hardware limited warranty Battery Mouse: 1 AA battery, 24 mo life KB: 2 AA batteries, 36 mo life Mouse Battery Indicator Yes Tracking Precision Tracking DPI 400-4000 DPI Scrolling Smartwheel technology Handedness Ambidextrous Easy-Switch No Battery Indicator Yes Keyboard Layouts See reverse Keyboard Size Full Number of Keys 118 Number Pad Yes Typing Plunger Tilt Legs Yes Tilt Angles 4°, 8° Backlit Keys No Illuminated Caps Lock No Illuminated Num Lock No Easy-Switch No Logi Options+ Yes - Options+ enabled Logitech Flow No Product Weight 807.1 g Product Dimensions Signature M650 for Business Height: 4.26 in (108.2 mm) Width: 2.40 in (61.0 mm) Depth: 1.52 in (38.8 mm) Weight: 3.58 oz (101.4 g) - weight includes battery (25g) and receiver (1.8g) SIgnature K650 for Business Height: 7.62 in (193.5 mm) Width: 18.00 in (457.3 mm) Depth: 0.94 in (24 mm) Weight: 24.7 oz (700.23 g)- w/o receiver and with 2 AA Alkaline batteries Software Logi Options+, available on Windows and macOS, IT Admin Mass Deploy Device firmware updates (DFUs) Logi Options+ software