Trackball computer wireless mouse B003 allows using mouse in hand without put on desktop or any surface

Trackball computer wireless mouse B003 allows using mouse in hand without put on desktop or any surface, ideal for presentation and home use when watch movie or play game.

left button: Click
Right button: Menu
Trackball: Thumb roll the trackball to control the cursor.
Scroll wheel: Back and forward moving for scroll
Back and forward button: Pressing the mouse cursor, rolling the trackball can move the page up and down.

Adjustable DPI button

Factory defaulf setting: 400 DPl 
Green indicator on: 600 DPI
Red indicator on: 800 DPI
Red and green indicator on at the same time: 1000 DPI

After skilled use can set for higher DPl

Wireless mouse: If the cursor movement slow, please charge the mouse for 3 hours and unplug the charging line after charged. Green indicator will be on when charging. If the cursor become motionless, but the buttons have respond, please use a toothpick or tine wire insert into the rest hole and press for 2 seconds at least for resetting.

Operation distance: 10 metes