Product Specifications General Brand: JEQANG Model Number: JW-207 Product Status: In Stock Place of Origin: Guangdong, China Private Mold: No Interface & Tracking Interface Type: USB Type: Dual‑mode wireless Tracking Method: Optical DPI: Adjustable Buttons & Controls Number of Buttons: 4 Number of Rollers: 1 Programmable: No Design & Ergonomics Hand Orientation: Both Hands (Ambidextrous) Style: Ergonomics, Mini Ergonomics: Yes Backlit: No Power Power Type: Battery Application Compatible With: Desktop, Laptop