Used Garmin Auto Adapter (most of these are in brand new condition) Compatible Devices: Astro 430, 320, Alpha 100, TT10, TT15, T5, and TT15/T5 mini. This Product is USED and may have minor blemishes. Double U will honor our 30 day return policy on this product. Please call us with any questions or concerns # 855-384-8687.