Nulea Wireless Ergonomic Vertical Trackball Mouse Thumb ControlThis vertical trackball mouse is designed for users who spend long hours at their computer and need to reduce wrist and arm strain. The 65° ergonomic angle positions your hand in a natural, relaxed posture while the sculpted shape with wave-textured surface provides comfortable palm support throughout the day. The thumb-controlled trackball lets you navigate without moving your entire arm, making it ideal for tight workspaces or anyone experiencing discomfort from standard mice.The mouse connects wirelessly to up to three devices via Bluetooth or the included USB receiver, allowing you to switch between your computer, laptop, and tablet with a single button press. The smart scroll wheel automatically adjusts between precise and fast modes based on scrolling speed, with smooth 4-way navigation for long documents.Itemweight0.57 poundsProductdimensions4.4 x 3.0 x 5.2 inchesStyleModern