[. . . ] [. . . ] The textured wheel, ratcheted scrolling design and Teflon feet have been optimised to provide control, speed and accuracy Wireless freedom Advanced 2. 4GHz wireless technology means less interference, longer range of operation and no wires to tangle. The micro-receiver is so small you can leave it plugged into your notebook (no more broken or lost receivers) Programmable buttons Two easily-accessible programmable buttons allow you to launch applications, control sound volume, navigate backwards and forward, zoom in and out and launch your favourite websites Compatibility Dimensions Compatible across all notebook and desktop platforms Out of package: Mouse: 99. 16 x 60. 12 x 37. 83 mm; Dongle: 18. 80 x 15. 00 x 6. 60 mm Packed: 160 x 230 x 50 mm Weight Out of package: Mouse: 0. 065 kg; Dongle: 0. 003 kg Packed: 0. 203 kg Warranty 2 years limited warranty Additional information What's in the box P/N: NK526AA#ABB UPC/EAN code: 884420690320 HP Wireless Comfort Mobile Mouse USB Wireless Receiver One AA Batteries Documentation, Software and Warranty Copyright Notice : The product could differ from the images shown. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. [. . . ] [. . . ]