This is the Bryton Rider 460 cycle computer unit. I used it for about 6 months, and it was working without any problems. - Surface: No dirt or scratches on the screen, no LCD abnormalities. - Back: There are mounting marks on the mount. - No abnormalities in the operation of the power and switch. - System settings have been reset to factory default. - Accessories: Charging cable, mount base - Instruction manual is available on the web. Please check the photos. Please consider this item, understanding that it is a used product. Shipping method will be Yu-Packet Post Mini.