Logitech MK470 Slim Compact Wireless Keyboard Pebble Mouse Combo Bundle Set Work Place Supports where and how you Supports where and how you like to work Trust the brand with 20 years of ergonomic expertise for a monitor stand that works perfectly in the office and for home office professionals DescriptionSpecificationsShipping Works with Surface 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 Battery life Keyboard: 36 months Battery type keyboard: 2xAAA Wireless operating distance: 10 m 4 Wireless technology: Logitech Nano Receiver Keyboard: Yes 2 AAA batteries (pre installed): Yes Mouse: Yes 1 AA battery (pre installed): Yes USB receiver: Yes User documentation: Yes