Price negotiation not accepted. Thank you for viewing. This is a Cateye cycle computer, Strada Digital Wireless CC-RD420DW, with cadence measurement function. There are some minor scratches and dirt from normal use and storage, but it is a beautiful item without any noticeable scratches or damage. Please check the condition in the photos. Basic operation and sensor linking have been confirmed. The manual, uncut mounting bracket, each magnet (cadence magnet is pedal axle mounting type), tie-wrap bands for sensor installation, etc., all necessary parts are included, so you can use it immediately. For those who contact me before purchasing, I will also include two button batteries. CATEYE / Cateye Cycle Computer CC-RD420DW Strada Digital Wireless Speed Cadence - Brand: CAT EYE - Model: Strada Double Wireless - Type: Cycle Computer - Accessories: Sensor, mount, cable, magnet, instruction manual - Display: Digital - Product code: CC-RD400DW Thank you for viewing.