[. . . ] [. . . ] Look us up online at www. hp. com · · · · · · · · · · · HP Part Number: WE788AA#ABA UPC Code: 884962760345 ITF 14 Master Carton: 20884962760349 Country of Origin: China Master Carton Quantity: 24 Master Carton Dimensions: 24. 02"(L) x 13. 98"(W) x 10. 35"(H) Master Carton Weight: 12. 61 lbs Packaged Product Dimensions: 8. 47"(L) x 6. 30"(W) x 2. 01"(H) Unpackaged Product Dimensions: 3. 86"(L) x 2. 36"(W) x 1. 36"(H) Packaged Product Weight: 0. 32 lbs Unpackaged Product Weight: 0. 18 lbs Compatibility Statement: · Compatible across all notebook and desktop platforms Technical Specifications: · Optical sensor(1250 CPI default, 1750 CPI max) · 3 buttons: two primary buttons and clickable scroll wheel · USB wireless receiver at 27 MHz System Requirements: · Available USB port · Microsoft Windows XP/Vista/7 12 15 r1 rk Actual product may vary from image shown on datasheet. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. HP shall not be liable for technical or editorial errors or omissions contained herein. * Battery Life depends on usage; ** Internet service required and sold separately; [. . . ] [. . . ]