NOTE:
YUMQUA Y-10 usb trackball mouse is a normal size comfortable for adult.

Feature:
--It can be operated in various ways to ensure long-term use without harm to
wrist or muscle.
--No limitation of operational space.
--Avoid sitting closely to the monitor and reduce the harm of radiation and
eye fatigue.
--Plug and play ,no software required.
--Fits left and right handed users.
--Works well for browsing and reading.
--A very good trackball for the traveler.

Package Including:
1 x Trackball Mouse Wired
1 x User Manual