Voltage: 12V voltage; Size: 115*58*70mm Atmospheric pressure: 0.1Mpa-0.13Mpa Design: red surface, chrome plated; stable performance, easy installation, match your car horn! Function: can work in fresh or salt water environments, suitable for almost all weather conditions. Easy to use: flexible and portable; easy to install and remove. Wide range of applications: suitable for 12V speakers (cars, trucks, ships, off-road vehicles, etc.). 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.