Carrying Case for C300 Series. Garmin 0101070400 Case for C3 Series. This lightweight case holds your GPS, mount and power cable. Great for keeping your gear together when traveling and using your unit in multiple vehicles or rental cars. This lightweight case holds your GPS, mount and power cable. It is great for keeping your gear together when traveling and using your unit in multiple vehicles or rental cars.For a complete compatibility list please refer to the original manufacturer's web site.