Now you can maintain your Ember Travel Mug's perfect temperature even longer with the Ember Car Charger. Ensure your Ember Travel Mug stays fully charged for your longest road trip or commute, so it is always ready when you are. Compatible with all 1st and 2nd generation Ember Travel Mugs Ember Car Charger plugs into car via 12V power outlet (Cigarette Lighter) Fits in most standard cup holders (see Product Details below) Smart LED Indicators: Adapter LED light is solid white when powered on, green when mug is fully charged, breathing red when charging the mug. Includes cable winder. Pull both cable ends simultaneously to adjust to desired length. *For use with the Ember Travel Mug or Ember Travel Mug² or 2+ only. Does not work with Ember Tumbler.