Car exterior: Made of durable materials. Car digital voltmeter - internal and external temperature measurement, clock display function, ultra-thin shell. Voltmeter: Suitable for measuring the temperature of aquatic reptiles, indoor and outdoor, air conditioners, refrigerators and vehicles. Car dashboard ornaments - Made of waste materials. Outdoor thermometer - Self-adhesive, easy to install, no drilling required. Frame size: 22*58mm Installation opening size: 19.5 x 56mm. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.