Logitech MK470 Slim Wireless Keyboard and Mouse Combo Graphite 920-009182

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: 393.7 in (10m) 4Wireless range may vary due to environmental and computing condition
Wireless technology: Logitech Nano Receiver