Wireless Trackball Mouse — 2.4GHz / Bluetooth Thumb Ergonomic Mouse with Back & Forward Buttons, 6-Button Cordless with Optical USB Receiver, 3 Adjustable DPI Levels (Gray, 1 Pack)

Thumb-operated trackball for precise cursor control: this design uses a thumb-mounted trackball so you can move the pointer without moving your arm, reducing wrist and forearm strain. Ideal for cramped workspaces such as cluttered desks, couches or beds. Note: this is a trackball mouse, not a conventional traditional mouse. Triple connection, plug-and-play setup: supports Bluetooth and 2.4GHz wireless connection with optical USB receiver. The mouse can connect to three devices simultaneously and lets you switch between PC, laptop and iPad with a single button to boost productivity. Compatible with Windows, Android, Mac OS, PC, laptop and desktop systems. Rechargeable power and adjustable sensitivity: built-in rechargeable lithium battery eliminates disposable batteries — turn the mouse off when not in use to preserve charge. It offers flexible sensitivity with 5 DPI levels (200/400/800/1200/1600) for fine control; the product listing also highlights 3 adjustable DPI levels for quick switching. Comfort and sound characteristics: the frosted surface and quiet left/right clicks help minimize distractions while you work (note: the middle scroll wheel is not silent). Physical layout includes 6 buttons total. All buttons are non-programmable, and the back/forward buttons are not compatible with Mac OS systems.