[. . . ] HP Wireless Laser Comfort Mouse For a sculpted design and performance. [. . . ] The HP 2. 4 GHz Wireless Laser Comfort Mouse's technology means you'll experience less interference when you're working at home and on the road, so you'll be able to work without frustration ­ for as long as you like. The HP Wireless Laser Comfort Mouse has a USB micro-receiver that's so small you can leave it plugged into your notebook. Using an energy-efficient battery means you're helping to protect the environment. The HP Wireless Laser Comfort Mouse has a 15-month battery lifespan so it's both environmentally friendly and makes your life simpler. Compatibility: Compatible across all notebook and desktop platforms Recommended system requirements: USB 1. 1 or 2. 0 ports; CD ROM drive; Win XP, Vista, Win 7 Power: 1200 dpi laser sensor; 5 buttons: two primary buttons, clickable scroll wheel and 2 additional programmable buttons; USB wireless (2. 4GHz) mini-receiver Dimensions: Out of package: Mouse: 111. 23 x 65. 6 x 36. 93 mm; Dongle: 18. 8 x 15 x 6. 6 mm Packed: 217 x 160 x 50 mm Weight: Out of package: Mouse: 0. 115 kg; Dongle: 0. 0017 kg Packed: 0. 235 kg Warranty: 2 year limited warranty Additional information: P/N: VT677AA #ABB UPC/EAN code: 885631248508 Copyright Notice : The product could differ from the images shown. [. . . ] HP shall not be liable for technical or editorial errors or omissions contained herein. [. . . ]