CAR CHARGER ADAPTER – this replacement portable car charger is made for use with the HALO Bolt 58830 and 57720 power bank. SAFE AND RELIABLE - This car charger has been tested to meet the highest quality standards and offers a fast recharge to you HALO Bolt. COMPACT DESIGN – measuring only 2-3/4 inches long, this mini car charger won’t take up much space in your vehicle and plugs into any car DC outlet. WARRANTY INCLUDED – we’re so confident in the quality of our products that this wall charger is guaranteed by the manufacturer with a limited 90-day warranty. EXCELLENT CUSTOMER SERVICE – HALO is a global leading force that is dedicated to offering an array of consumer electronic products that are innovative, portable, and reliable.