Lab C Dual USB Car Charger, 2 Port Rapid Charge - Space Grey Dual USB ports: Input: DC 12-24V; Output:DC 2.4A/1A The LED light confirms that the devices is properly connected Rapid charging speed with 2.4A and 1.0A USB output Intelligent technology equipped on all ports to identify each attached device and provide the highest recharging power that the devices can adapt to Certified by RoHS, CE & FCC; High quality fire proof material & anti-oxidation aluminum pull tab;No radio loss in your car or effect to Bluetooth