Thank you for viewing. The item is a Carrozzeria Cyber Navi GPS antenna. I purchased this because a "GPS antenna malfunction" message was displayed on the monitor of my ZH9900. However, it turned out that the navigation unit itself was the problem. The issue was resolved by replacing the main unit and using the original GPS antenna, so this one is no longer needed and I am listing it for sale. I connected it to the navigation unit only once for troubleshooting, so it is practically new. Please refrain from price negotiations. If the connector shape is the same, it should be usable with other navigation systems. The product is listed as compatible with the following navigation systems: GPS Antenna (GPS antenna only, Carrozzeria and others) AVIC-RL99 AVIC-RW99 AVIC-RZ06 AVIC-RZ77 AVIC-RZ99 AVIC-VH0999 AVIC-VH0999S AVIC-ZH0777 AVIC-ZH0777W AVIC-ZH0999 AVIC-ZH0999L AVIC-ZH0999LS AVIC-ZH0999S etc. Rakunavi Cyber Navi and many others. GPS antenna, frequency 1575.42MHz, voltage 3.0-5.0V, with green connector. - Model: GPS Antenna - Frequency: 1575.42MHz - Voltage: 3.0-5.0V - Connector Type: Green Connector Thank you. ※ Please understand that information about holidays is listed at the end of my self-introduction.