Features Design:Including USB charger voltmeter charger switch fuse save more spaces easier to use and more functional. Waterproof and Dust-proof: The power ports and power switch are all covered by caps which make this unit fully competent for outdoor travel in all kinds of weather. Voltmeter:The product comes with a voltmeter which can detect the battery voltage status at any time to prevent hidden dangers caused by bad batteries. Material:This USB charger socket is made by ABS environmental protection material which is fire-retardant high and low temperature resistant and anti-corrosive charging faster and more secure. After-sales Service:If you have any problem please contact us immediately we will help you solve it as soon as possible. Specification: Material:ABS Voltage Detection:6-30V Product Size:3.7*7.4cm BracketHeight:2-2.25cm Output Voltage: USB: 5V-3.4A/9V-2A/12V-1.5A TYPE-C: 5V-3A/9V-2.22A/12V-1.67A includes: 1* Handlebar bracket 1* Mirror mounting bracket 2* Small screws 1* Handlebar fixing screws 1* Non-slip tab 1* Metal gasket 1* Fixing nut 1*Charger body "