ITEM NAME:Universal In Car Auto Phone Charger Socket Adapter 4 USB Port Multi Fu SVV.Output interface: usb. 4 USB Ports - For Front and Rear seat. At normal room temperature, it is normal to heat up no more than 60 degrees. Built-in safety IC. USB output: DC 5V/7200. During charging, the access and call of the phone will not be affected, so as to ensure unimpeded information.