Portable Finger Hand Held 4D Usb Mini Trackball Mouse

Feature:

• Elegant design.
• Off-table, for free and comfortable operation.
• Avoiding, eye fatigue and radiation harm.
• Compatible with Windows 95 versions B/98/ME/2000/XP/NT.
• Can be operated in various ways, avoiding harm to palm joint or muscle.
• User doesn’t have to sit close to the monitor when using this track mouse.
• Can control the cross coordinate sensitively, simply with the thumb.
• Compatible with Win7/win8/ME/XP/NT

Specification:

• Interface Type:USB
• DPI:200
• Hand Orientation:Both Hands
• Buttons:3
• System Support:Support Window 10 / 8 / 7 / Vista / XP / 2000