This three-in-one car clock and thermometer with voltage meter is a must-have for any car owner. With its accurate readings and easy installation, it provides real-time data on your car's voltage and indoor or outdoor temperature. Features -Color:multi -Material:ABS, plastic -Size:9.00X6.00X5.50cm/3.54X2.36X2.16in -Working voltage: DC 12V-24V -Output 2000 mA -Output voltage: 12V -Temperature measurement range: -50 degree centigrade~70 degree centigrade -Thermometer’s resolution: 1 degree centigrade; accuracy: ±1.0 degree centigrade -Temp metering duration: 20 seconds -A three-in-one voltage meter, clock, and indoor, outdoor thermometer, function very well. -The readings provided by the device are accurate and has real-time data of car voltage and indoor, outdoor temperature. -The installation process is simple as it involves plugging the device into the cigarette lighter. -Multifunctional display of the this accessory shows time, voltage, and also temperature, fit your requirements. -Practical car voltmeter is a good and must-have accessory for car owners, bring you convenience. Package list: 1 Voltmeter