SANWA SUPPLY Optical Trackball

A trackball that rolls the ball with your finger and operates the cursor.
It is a thumb operation type that can be used in a relaxed state without force.
It is an ergonomic shape that fits just by lightly attaching the palm.
It uses a 34mm medium size ball that is just right for moving with your thumb.
The cursor speed can be switched in 4 steps of 600, 800, 1200, and 1600 counts.
A silent switch is used for the left and right buttons, wheel (scroll) button, and count switching button.
In the 2.4GHz digital band, which is resistant to radio interference, stable data communication is possible over a wide range with a radius of 10m.
* Only when there is no radio wave interference.
Comes with a power ON / OFF switch to prevent battery consumption when not in use.
The receiver is easy to store by simply inserting it into the back of the mouse body.
* When operating the mouse about 5% while using a computer for 8 hours a day (when using alkaline AAA batteries)
* This is a manufacturer's calculated value that does not take into account natural discharge, etc., and is not a guaranteed value.
* Performance will gradually decrease depending on the period of use. Please note.
* You can also use it with a USB 3.1 / 3.0 / 2.0 interface.