Features: Multi-function car LCD digital display. With car charger, and can real-time monitor temperature and car voltage. To ensure the safety of your car. Easy to install,no needed the professional skill. Voltmeters are widely used in automobiles, motorcycles, bicycles, test equipment, voltage regulators, etc. Package Includes: 1x Multifunction Voltmeter Specifications: Material:Plastic Voltage: 12/24V USB output: 5V 2.1A Color:Green,Blue,Red Size:Approx. 4.5x 7.5cm/ 1.77x 2.95in Net Weight:46g note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. About shlpping: All items will be shlpped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.