This product is either discontinued or we cannot get that from suppliers.
Brand: Garmin, Model: 010-13087-00, Type: Antenna, Colour: Black, Compatible: Tread - Overland Edition / Tread - SxS Edition / Tread XL - Overland Edition.
This robust external antenna is packaged in a low-profile water-resistant housing. External GPS antenna provides increased flexibility and installation options as well as the potential for enhanced performance.