Features:
1.It can be operated in various ways to ensure long-term use without harm to wrist or muscle
2.No limitation of operational space
3.Avoid sitting closely to the monitor and reduce the harm of radiation and eye fatigue
4.Plug and play ,no software required
5.Fits left and right handed users
6.Compatible with Win7,Win8 ME/ XP/ NT
7.Unit Dimensions: 3.15*1.57*1.96 inches (8*4*5cm)
8.USB Cable Length: 78.74 inches (200cm)
9.Color: Black

How To Use:
1.Put your index or middle finger into the hole of this mouse.
2.Control the track ball for moving cursor and press the right and left button with your thumb
3.When using "Drag and Go" function, press the button in the hole of the mouse that has the same function as the left button of the common mouse
4.Use the left button to lock the screen and then you can control the track ball to roll your screen freely

Package included: 1 x Handhold 4D USB Mini Trackball Mouse

Note:

1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures,,but not the same performance on different bodies as on the model.

2.Compare the detail sizes with yours,please allow 2-4cm differs due to manual measurement for the clothes, thanks All measurement in cm and please note 1cm=0.39inch

1) Buyer's early confirmation will be highly appreciated after receiving the items.
2) Since your feedback is very important to our business's development, we sincerely invite you to leave positive feedback for us if you are satisfied with our product and service.
3) Please contact us before leaving any negative or neutral feedback. We will work with you to solve any problems.Thank you for your understanding!