Battery Included: No,No
Brand Name: NONE
Certification: NONE,CE,FCC,NONE
Choice: yes
Hand Orientation: Right,Right
High-concerned chemical: None,None
Interface Type: USB,USB
Number of Buttons: 3,3
Number of Rollers: 1 pcs,1 pcs
Operation Mode: Opto-electronic,Opto-electronic
Origin: Mainland China,Mainland China
Package: Yes,Yes
Type: Wired,Wired













