ECHTPower Trackball Mouse, Easy Thumb Control Ball Mouse, Precision and Smooth Tracking, Wireless Mouse Support 3 Device Connection(2.4G or BT), Rollerball Mouse for PC/Laptop/Mac/Windows

Ergo Trackball MouseWireless mouse can be controlled by the thumb, without moving the arm, and has a 15° tilt design. It can keep the hand more comfortable and effectively relieve muscle fatigue of the hand and wrist.
Tri-mode MouseUp to 3 devices can be connected via Bluetooth or USB receiver and easily switched with one button. Ball mouse has a maximum stable connection distance of 10M, perfect compatibility with PC/Laptop/Windows/Mac/iPad.
Mute Button DesignThe Left button/Right button/Forward button/Back button is designed to silent click, which reduces clicking noise by 90% compared to the normal mouse, silent mouse lets you focus on work without disturbing others.
Precise Optical TrackingRollerball mouse adopts a trackball optical system, ideal for narrow office spaces and crowded desks. Precise tracking and smooth control can be achieved on various surfaces.
Long Working LifeECHTPower bluetooth mouse is powered by an AA battery (not included). After no power, just replace the new battery to continue to use, wireless use forever. A 2400mAh AA battery will last for 2 months based on 8 hours per day.
Package Includes1 X Track ball Mouse, 1 X USB Receiver, 1 X User Manual. If you have any questions, please feel free to contact us.