Logitech SIGNATURE SLIM COMBO MK950 A keyboard and mouse set that keeps you productive as you switch between your work and personal computers. Technical Specifications Battery Keyboard Battery Type: Non-rechargeable, Alkaline Number of Batteries: 2xAAA (included) Battery life: 36 months 1Battery life may vary based on user and computing conditions. Battery Mouse Battery Type: Non-rechargeable, Alkaline Number of Batteries: 1xAA (included) Battery life: 24 months 2Battery life may vary based on user and computing conditions. Multi OS compatibility Easy-Switch button (connect up to 3 multi-OS devices) Compatible with Logitech Flow technology. Sensor Technology Logitech Advanced Optical Nominal value: 1000 DPI DPI (Minimal and maximal value): 400-4000 DPI (can be set in increments of 100 DPI) Connection type support Logi Bolt USB receiver (included) Bluetooth Low Energy Technology (Bluetooth 5.1) Warranty Information 1-Year Limited Hardware Warranty