ORIA Bluetooth FM Transmitter, Wireless in-Car FM Transmitter, Hands-Free Calling Car Charger, with 5V/2.4A &1A Charging Ports, U Disk Music Playing Support, for Mobile Phone, Samsung, Smartphone Dual USB Charger Ports 3.4A Dual USB charger ports can simultaneously charge two devices, intelligent shunt to ensure that the current is stable and fast charging. Blu-ray LED display intelligent display voltage, real-time monitoring of automotive voltage, low voltage voice alarm, built-in led lights, night driving more secure and convenient. Multi-Purpose Support the Bluetooth connection phone and car charger, you can put navigation, music, telephone voice to the car radio, phone ringing sound, music automatically paused, through the car audio to hands-free call so that driving more secure. Compact design Small size,seamless integration of the fuselage design, ABS fire heat-resistant material, high hardness, durable, not easy to scratch, aluminum alloy metal ring, pure copper usb electric shock, greatly increased the service life. Safety Protection Intelligent control chip provides a safe circuit protection,improve the charging efficiency, short-circuit protection, over-voltage over-current protection, intelligent anti-interference,make FM/Bluetooth signal stability. Intelligent cooling system can quickly release the heat generated by the car charger to keep the charger stable. Widely Compatible Support for Apple/Android and other mobile phones and other digital products such as IPAD, navigators, PSP, MP3, digital cameras, etc,and supports voltage in 12-24v various cars.