Microsoft Designer Compact Keyboard – Black (21Y-0 0017) Model: 1954

Connection interface: Bluetooth® Low Energy 5.0 Wireless frequency: 2.4 GHz frequency range Wireless range: 33 feet (10 meters) in open area; up to 17 feet (5 meters) in typical office environment Compatibility3: Microsoft Windows 11 Home/Pro / 10 / 8.1 Device must support Bluetooth® 4.0 or higher** Dimensions: 11.18 x 4.36 x .35 in (284.07 x 110.77 x 9.05 mm) Weight: 288 g, 10.16 oz (including batteries) Battery: 4 CR2032 Lithium coin batteries (included and pre-installed) Battery life: Up to 36 months2 Colors4: Matte Black Warranty5: 1-year limited warranty Technology details: Bluetooth LE 5.0 ,Dedicated Expressive Input (emoji) and Screen snipping keys Scissor keyset, 1.35 mm low profile key travel Product feature performance: Multi-host support: Connect up to 3 devices Power On/Off Switch: Advanced features: Swift Pair1 for easy connect