Car charger with a double USB port + FM transmitter HOCO E41. It allows you to charge up to two mobile devices at the same time. One of the ports allows you to play music from a USB stick. The HOCO E41 car charger has been equipped with a dual USB port, so it can charge up to two portable devices at the same time. Allows you to play music from a USB flash drive or from a smartphone by using Bluetooth transmission. Built-in microphone allows hands-free calling while driving. Multimedia buttons make it easy to manage your music and incoming calls. Compact size makes the charger easy to carry and store. Specification: Bluetooth version: V4.2 JL Input voltage: DC12-24 V. Output current: 5 V-2.1 A 5 V-1 A. FM frequency: 87.5-108 MHz Capacity: U disk / TF card