・ Thank you very much for viewing. ・ This is a stand-alone GPS antenna used in Alpine & Kenwood navigation systems. How about it for replacing your navigation system, etc.?! ・ GT21 connector ・ Cord length: 3m Receiver: 36mm x 38mm (Compatible product) **This is the same as the coupler used in genuine products. ・ Alpine: From the 2021 model onwards XF11NX, X9NX, X8NX, 7DNX series, etc.! ・ Kenwood: From the 2022 model onwards MDV-M909~, MDV-M809~, MDV-S809~, MDV-S709~, MDV-L309~, MDV-L612 series, etc.! Thank you. Instant purchase OK! No discounts on single items!