The CAT EYE VELO WIRELESS+ is a wireless cycle computer that measures speed. Although it is no longer sold, it is perfect for beginners. This one was attached to a bicycle that had been ridden for about 50km. It has hardly been used. - The battery has been replaced. - The cable ties have been cut. I will include them for reference, so please purchase similar ones. - There is no instruction manual. You can find it by searching for "cateye cc-vt210w instruction manual". - Brand: CAT EYE - Model Name: VELO WIRELESS+ - Included items: Sensor, mount, mounting hardware - Display function: Wireless display - Color: Black Thank you for looking.