DELL MS7421W, Ambidextrous, Optical, RF Wireless + Bluetooth, 1600 DPI, Platinum, Silver DELL MS7421W. Form factor: Ambidextrous. Movement detection technology: Optical, Device interface: RF Wireless + Bluetooth, Movement resolution: 1600 DPI, Buttons type: Pressed buttons, Buttons quantity: 7, Scroll type: Wheel. Power source: Batteries. Product color: Platinum, Silver https://www.onmsft.com/feature/dell-premier-rechargeable-mouse-ms7421w-review Mice come in all shapes and sizes, but all are not created equal. Some are wireless, some need batteries, some are big, some are small, some need dongles and some do not.But what if you're looking to a mouse that can do it all, yet still stay compact? Tha...