BrandLogitech ModelM185 ColorBlue No. of Buttons3 ConnectivityWireless Wireless TechnologyAdvanced 2.4 GHz wireless connectivityWeight G75.2 gSkuIT.IT.MO7.312804Power Supply1 AA BatteryTechnologyAdvanced Optical TrackingPart No910-002502Height Mm60 mmDimensions60 mm (2.36 in) x 99 mm (3.89 in) x 39 mm (1.54 in)Return PolicyReturnable if DefectedOs SupportedWindows Vista, Windows 7, Mac OS X 10.5 or later.Width Mm99 mmInterfaceUSB receiverResolution1000 dpiDescriptionReliable wireless.12 months of battery life.Plug-and-forget nano receiver.Logitech reliability.Logitech Advanced 2.4 GHz wireless connectivity.Perfect for laptops and netbooks.Comfy, contoured shape.Plug-and-play simplicity. All-year power pack. Disclaimer: The above item can be returned only if found dead on arrival. Industrybuying does not bear any responsibility for any concerns you may experience with the purchased item thereafter. Please contact the manufacturer should you encounter any problems with the product.