Features: Multifunctional car LCD digital display; easy to install without profeional skills; On-board charger, real-time monitoring of temperature and car voltage; A special car thermometer with a stylish and lightweight design; LED dual digital thermometer voltmeter; Digital thermometer for 12V/ 24V battery with measurement range of 9~ 80; Simply insert the charger socket, and it can immediately confirm the battery voltage, low power consumption and high brightne display; Specifications: Type: Car Voltmeter Thermometer USB Charger Model Number: VST-706 Material: ABS + Electronic Components Voltage: 12/24V USB output: 5V/ 2.1A Display: digital display Measuring range: 9~ 80 Installation position: car interior Vehicle /Model: universal Product color: black Display color: red + red, red + blue, red + green Product size: 75 x 47 x 47mm/2.95 x 1.85 x 1.85" Net weight: 33g Packages: 1 x 3 in 1 Car LED Digital Voltmeter Gauge+ Thermometer+ USB Charger