Purchased about 4 years ago and used only once. There's a dent-like scratch that was probably there from the beginning, but it's not noticeable. The MX ERGO, with its ergonomic design, offers comfortable use. - Model Name: MX ERGO - Brand: logicool - Wireless Connectivity: Bluetooth compatible - Ergonomic Design: Ergonomically designed - Charging Method: USB rechargeable - Included Items: Instruction manual Thank you for looking.