WTT-CA50 rapid car charger which is designed for users while traveling on the car and less charging, equiped with 4 charging ports can compatible well with smartphone, tablet and MP3 etc all USB powered devices. Upgrade version of car charger, features 4 Port 10A / 50W USB car charger can simultaneously charges any 4 tablet or smartphone devices at full speed. Intelligent technology equipped on all ports to identify each attached device and provide the highest recharging power that the devices can adapt to. Fully charge all your devices while on the road traveling or during your daily commute. Support all of your passengers or devices at the same time! 1 Safe and Reliable: Low heat,short-circuit protection and temperature protection 2 Size: 43.36*38.05*104mm; • Material: ABS 3 Power: 50W; • Input: DC 12-24V 4 Output: 5V/10A (Max)