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| Price | $22.99 to $47.32 | $26.82 to $35.70 | $15.99 to $55.48 | $28.01 to $71.09 | $24.63 to $39.99 |
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| Release date | August 15, 2007 | August 15, 2007 | |||
| The Bottom Line | The Kensington Ci85m's instant-on receiver works as advertised, but unless you have a specific reason for wanting an ExpressCard mouse (we can't really think of one offhand), stick to the slightly cheaper USB model. | The Kensington Ci75m Wireless Notebook Mouse is a fine choice for when a laptop touch pad just won't do, with a USB receiver and USB cable stuffed into its slim body. | The Microsoft Wireless Mobile Mouse 4000 doesn't leave much room for complaint. Some will balk at the $40 price tag, but this mobile traveler fits comfortably in your hand and it can mouse on almost any surface, thanks to Microsoft's innovative Bluetrack technology. With a small footprint and a variety of stylish colors to choose from, this mouse makes a useful (and worthy) addition to your mobile arsenal. | ||
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| Features | |||||
| Battery | 2 x AAA type | 2 x AAA type | 2 x AA type | Info unavailable | 1 x AA type |
| Features | Scrolling wheel Battery indicator | Scrolling wheel Battery indicator | Scrolling wheel Power saving automatic sleep function | Info unavailable | Flip 3D button Programmable buttons Scrolling 4-way button Microsoft BlueTrack Technology |
| Dimensions (WxDxH) | Info unavailable | 2.5 in x 4.3 in x 0.7 in | Info unavailable | Info unavailable | 2.4 in x 4.1 in |
| Cables Included | 1 x USB cable - Integrated | 1 x USB cable - Integrated - 2 ft | Info unavailable | Info unavailable | Info unavailable |
| Connectivity Technology | Wired - RF Wireless - USB | Wired - RF Wireless - USB | Wireless - Bluetooth | Info unavailable | Wireless - 2.4 GHz |
| Product Description | Kensington Ci85m QuickStart Wireless Notebook Mouse - Mouse | Kensington Ci75m Wireless Notebook Mouse - Mouse | HP Bluetooth Laser Mobile Mouse, Intensity Series - Mouse | Info unavailable | Microsoft Wireless Mobile Mouse 4000 - Mouse |
| Color | Green Silver | Black | Info unavailable | Info unavailable | Berry pink |
| Microsoft Certification | Certified for Windows Vista | Certified for Windows Vista | Info unavailable | Info unavailable | Compatible with Windows 7 |
| Buttons Qty | Info unavailable | Info unavailable | Info unavailable | Info unavailable | 4 |
| Movement Resolution | Info unavailable | 1000 dpi | 1600 dpi | Info unavailable | Info unavailable |
| Localization | United States | Info unavailable | English / United States | Info unavailable | Info unavailable |
| Wireless Receiver | ExpressCard/34 wireless receiver | USB wireless receiver | Info unavailable | Info unavailable | USB wireless receiver |
| Movement Detection Technology | Optical | Optical | Laser | Info unavailable | Optical |
| Device Type | Mouse | Mouse | Mouse | Info unavailable | Mouse |
| OS Required | Info unavailable | Info unavailable | Microsoft Windows Vista Microsoft Windows XP SP2 | Info unavailable | Microsoft Windows 7 Microsoft Windows XP Microsoft Windows Vista Apple MacOS X 10.4.x - 10.5.x |
| Manufacturer Warranty | 5 years warranty | 5 years warranty | 1 year warranty | Info unavailable | 3 years warranty |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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