Stainless steel brake disc lock with alarm function for enhanced security. - Model: XN15 - Features: Built-in alarm, shock sensor - Accessories: Nylon carrying case - Compatibility: Likely compatible with most brake rotors. Please confirm compatibility yourself. Manufacturer's HP: https://www.xena.co.jp/disclockalarm/xn1507.htm Reference Price: ¥28,050 New batteries installed, operation sound and alarm sound confirmed. There are scratches from use. Please understand that this is a used item before considering purchase. As a bonus, a reminder cable is included. Thank you for viewing.