The OEM Expert Mouse Wireless Trackball offers a wireless connection via Bluetooth 4.0 LE or a USB nano receiver. It features TrackballWorks software that allows you to customize all four buttons and adjust cursor speed for enhanced usability. With DiamondEye optical tracking technology, it provides premium cursor control and accuracy. The award-winning Scroll Ring enables easy scanning up and down pages, while the large ball is designed as a perfect sphere to ensure exceptional precision.