Ergonomic Bluetooth MouseThe 5-button rechargeable Ergonomic Bluetooth Mouse (Model VP6158) uses either Bluetooth or 2.4GHz wireless with a range of 30 feet. In addition to mouse click buttons, it provides Web Forward and Back keys, a scroll-wheel, and a resolution key for switching mouse resolution (800, 1200, 1600 dpi) on the fly (Windows_, MacOS_ & Chrome OS_).Features:5-button rechargeable mouseErgonomic _ minimizes hand and wrist fatigueUtilizes either Bluetooth or 2.4GHz wirelessResolution Switching (800, 1200, 1600 dpi)Web Forward & Back keys (Windows only)Up to 30-foot (10m) wireless rangeWindows, OS X CompatibleBenefits:Ergonomic minimizes hand and wrist fatigueRechargeable never throw away AA batteriesMulti-resolution supports a wide spectrum of applications.Dependable supported by a 1-Year Manufacturer's WarrantySpecifications:Product Dimensions / Weight4.88" (L) x 3. 58" (W) x 2.79" (H) / 4.23 oz.124 (L) x 91 (W) x 71 (H) mm / 120gPackage Contents:Ergonomic Bluetooth MouseRF Receiver Dongle (in mouse base)QuickStart GuideWarranty:1-year manufacturer's limited warranty