The resin on the middle scroll wheel area seems to be slightly melted. [Design] This is a simple and easy-to-use black wired mouse. It will match any desk environment. [Connectivity] It connects via USB and can be easily connected to a computer. No special drivers are needed; it supports plug-and-play. [Usability] The shape fits comfortably in the hand, and the design is not tiring even after long hours of use. - Color: Black - Connectivity: USB Thank you for viewing.