MICROSOFT Bluetooth Compact Keyboard Bluetooth English Glacier

Battery Type 4 CR2032 Lithium coin batteries (included and pre-installed) Connectivity Bluetooth LE 5.0 Dimensions 284.07×110.77×9.05 mm (11.18×4.36×0.35 in) Interface Bluetooth® Low Energy 5.0 Mouse Bundle Operating System Microsoft Windows 10/8.1 Series Supported OS Device must support Bluetooth® 4.0 or higher* Warranty 1-year limited warranty Weight 288 g (10.16 oz.) (including batteries) Wireless Range 33 feet (10 metres) in an open area; up to 17 feet (5 metres) in a typical office environment