Logitech MX ERGO - Trackball - optical - 8 buttons - wireless - Bluetooth, 2.4 GHz - USB wireless receiver

Precision scroll wheel with tilt. Get things done faster with quick access to shortcuts. The precision scroll wheel features horizontal scrolling and a convenient middle click. Customized comfort. Finally a trackball you can truly call your own. A unique adjustable hinge allows you to choose the optimal angle between 0 deg.and 20 deg. for a more natural hand position and greater comfort. Long-lasting and fast rechargeable battery. Battery holds power for a few months on a full charge. One minute of charge gives up to a full-day of use. Advanced tracking and precision mode button. Change the speed and accuracy of your cursor for optimal control with a press of a button. Effortless multi-computer workflow. Connect and work on two devices at the same time and easily switch between them. Boost your cross-computer experience with Logitech FLOW technology. Copy and paste text, images and files between computers.