Keyboard Battery type: 2 AAA batteries (included) Battery life: up to 36 months 2 Battery life varies depending on user and computing conditions. Minimalist layout with 4 additional customizable action keys Dual-printed layout (Windows/Mac) Easy-Switch key (connects to up to 3 multi-OS devices) Power on/off button Caps Lock and power indicator Compatible with mice that support Logitech Flow technology 3 Requires the Logi Options+ app for Windows and macOS. and macOS, download at logi.com/optionsplus Mouse Battery type: 1 AA battery included Battery life: up to 24 months 4 Battery life varies by user and computing conditions. Sensor Technology: Logitech Advanced Optical Tracking Technology Rating: 400 DPI Maximum:: up to 4000 Number of buttons: 2 (top, scroll wheel with center button) Silent Clicks 5 Clicking sound is reduced by over 90% compared to the Logitech M185. Left click and input dB rating measured by independent lab at 1 meter distance