Lenovo ThinkBook mouse Office Ambidextrous Bluetooth Optical 2400 DPIBluetooth 5. 0, 2400 DPI max, 61 g The ThinkBook Bluetooth Silent Mouse takes a well worn concept and turns it on its head, delivering a productivity device that doesnt get in the way of the busy professionals who use it. It sculpted to be comfortable to rest your palm on, with a low profile, minimalist design that makes the mouse easy to carry and fit into pockets without bulging. Get more done with the blue optical sensor that allows you to work on