Features: 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°C; Simply insert the charger socket, and it can immediately confirm the battery voltage, low power consumption and high brightness 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°C Installation position: car interior Vehicle Brand/Model: universal Product color: black Display color: red + red, red + blue, red + green Net weight: 33g Included: 1 x 3 in 1 Car LED Digital Voltmeter Gauge+ Thermometer+ USB Charger