Logitech M220 Silent Key Features Wireless Mouse 1000 dpi 3 Buttons Optical Tracking Up to 18 Months Battery Life Overview The Logitech M220 is the perfect mouse for portability and convenience. With its compact and comfortable design, wireless connection and virtually silent clicking, you can use it anytime, anywhere, without worrying. Durable and reliable, the M220 will last up to 18 months off a single battery without charging, while the 10m range on the receiver means you can work however you like in any environment. Specifications Design Ambidextrous Sensor Optical Tracking Resolution 1000 dpi Number of Buttons 3 Connectivity Wireless USB Dongle Wired/Wireless Wireless Rechargable No, removable battery Colour Charcoal Dimensions 99 x 60 x 39 mm Weight 75.2g