This 2-in-1 Retractable Battery Pack and Car Charger with Micro USB Cable is compact, portable and convenient. The dual function car charger and on-the-go battery pack are perfect for taking on the go. The LED light indicates when power is low. The tangle-free 3.2ft cable retracts for compact and convenient storage. It comes packaged in a 6.75" x 4.50" x 1.50".