1LED indicator, exquisite workmanship, the whole product looks high-end atmosphere. 2The product input voltage is 12-24V, all 12-24V ships and car can be installed and used, and the range of use is very wide. 35V/1A and 5V/2.1A dual USB can be used to power most car accessories such as mobile phones, tablets, navigation and GPS. 4The product is equipped with 60CM red and black wire with OT terminal for easy installation. 5With a voltmeter, you can measure the voltage of the car at any time, prevent safety accidents caused by poor battery.Condition: 100% Brand New Item Type: Dual USB Voltmeter Color: Black Optional LED Indicator: Blue, Green, Red Material: ABS Opening Size: Approx. 2.9cm/1.14in Line Length: Approx. 60cm/23.6in Input Voltage: DC12V-24V Output Voltage: 5V Output Current: 5V/1A; 5V/2.1A Reverse Protection: Yes Measurable Voltage: 6-38V Working Temperature: -20 C -80 C Waterproof Rating: IP66 Installation Range: Can Be Installed in Motorcycles, Car, Ships, Yachts, Motor Homes, Buses and Other Large-scale Travel Tools Product Use: Can Be Used to Power Most Car Accessories Such As Mobile Phones, Tablets, Navigation and GPS Wiring: '+' at the copper terminal is connected to the positive pole of the power supply, and '-' is connected to the negative pole of the power supply 1 x Dual USB Voltmeter 1 x 23.6in (60cm) Red Black LinePlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.