Feature: 1. Dual USB output voltage has three output schemes: 5V/3.4A, 9V/2.5A, 12V/2A. The agreement includes 2 fast charging ports: DCP BC1.2, Apple Divider3/Samsung 1.2V, Qualcomm QC2.0/QC3.0, Huawei SCP, FCP, Samsung AFC, Spreadtrum SFCP and other fast charging protocols. 2. It can be installed on cars, motorcycles, ATVs, RVs, SUVs, boats, yachts, and other transportation tools. 3. The product is equipped with a color screen voltmeter, which can detect the use of the car battery at any time to prevent accidents caused by bad battery. 4. Adopt ABS anti-flame retardant high and low temperature resistant material, with very high stability. 5. The product is equipped with terminals, which is convenient and simple to install, increasing the beauty of the car. Specification: Name: Color screen voltage meter with dual USB with 60CM line. Size: Product head diameter:39mm. product total length: 54.8mm. Hole size: 28mm. Material: ABS flame retardant material. Color: black shell. Input voltage: DC12V. Fast charge output: 5V/3.4A; 9V/2.5A; 12V/2A. Voltage test range: 11-14V. Purpose: Dual USB can be used to power most of the car supplies such as mobile phones, tablets, IPAD, navigation and GPS; color screen voltmeter can be used to detect the use of car voltage. Range of use: It can be installed on cars, motorcycles, ATVs, RVs, SUVs, boats, yachts, and other transportation tools. Features:  There are multiple protection functions: input overvoltage, undervoltage protection; output overcurrent, overvoltage, undervoltage, and short circuit protection; reverse connection protection; chip internal high temperature protection. Package Included: 1 X Voltmeter with Dual USB Charging. 2 X Blue Terminal. 2 X 60CM Line(Red+Black)