The Garmin AC adapter is your ticket to charging your Garmin GPS unit inside. If you want to enter in addresses or simply get to know your Garmin better by playing with it, the GAX10723 will allow you to do it while charging that units battery. International adapters are also included with the purchase. Garmin 110v. A/C adapter for Streetpilot I Series, C Series, all Nuvi's, Oregon, Dakota, and Approach. Garmin cat # 010-10723-00