TECKNET Wireless Trackball Mouse Bluetooth Black TK-MS023A wireless trackball mouse designed for users who need precise cursor control in compact workspaces. The ergonomic design features a 16-degree vertical tilt that promotes a natural forearm position and helps reduce strain during extended use. Connect to up to three devices simultaneously using Bluetooth or the included 2.4GHz receiver, switching between them with a single button press. The built-in 500mAh battery charges rapidly and provides all-day power. Ideal for those with medium to large hands seeking comfort and efficiency.Itemweight0.51 poundsProductdimensions4.0 x 0.1 x 5.0