Uses: Can be used to most car accessories such as mobile phones, tablets, navigation and GPS.Scope of use: can be used on DC12V , motorcycles, ATV, SUV, ships and other means of transportFeatures: There are a variety of protection functions: input overvoltage, low voltage protection; output overcurrent, overvoltage, low voltage, short circuit protection; reverse connection protection; chip internal high temperature protection.Advantages: USB output voltage has 5V34A /9V25A/12V2A three output schemes.The agreement includes: DCP BC12, for Divider3/ 12V, Qualcomm QC20/QC30, SCP, FCP, , Spreadtrum SFCP and other fast charge agreements, which can support 's super fast charge.Name: Dual USB Super Fast Charger QC30 + Voltmeter + SwitchInput voltage: DC12VInstallation : handlebar installation, screw fixingVoltmeter color: redMonitorable voltage range: 6-30VOutput voltage: 5V34A/9V25A /12V2Acolour:BlackMaterial:ABSPackage Contents:1 x Motorcycles Charge1 set x Mounting AccessoriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.