* Smart charging converter for Garmin D2 Mach 1. * This adapter will allow you to charge and connect your Garmin D2 Mach 1 with one USB cable. *Simply connect your Garmin D2 Mach 1 with this adapter and connect a USB type-C cable to your computer or USB charger. * Charge your Garmin D2 Mach 1 through one power adapter.