Features:Multi-function LCD display for car; Easy to install without professional skills; On-board charger, real-time monitoring of car temperature and voltage; Special car thermometer with stylish and lightweight design; LED Voltmeter with Dual Digital Thermometer; Digital thermometer for 12V/ 24V battery with measuring range of 9 - 80°c;Simply insert the charger socket and immediately confirm the battery voltage, low power consumption and high brightness display; Specifications:Type: Car Voltmeter USB Charger ThermometerModel Number: VST-706Material: ABS + Electronic ComponentsVoltage: 12/24VUSB Output: 5V/2.1 aProduct Display: Digital DisplayMeasuring Range: 9 - 80°cInstallation Position: Car InteriorVehicle Make/Model: UniversalProduct Color: BlackDisplay Color: Red+Red, Red+Blue, Red+GreenProduct Size: 75x47x47mm/2.95x1.85x1.85"Net Weight: 33g1x3 in 1 Car Voltmeter digital LED + thermometer + USB charger