Features ????1. High Quality Waterproof, Dustproof and Shockproof: Our 12V to 5V 3A USB converter adopts a sealed silicone shell to ensure waterproof, dustproof and shockproof. This rugged design allows you to use it in a variety of environments with confidence. ????2. Precision SMT process: The internal circuit board of Waterproof Voltage Step Down Converter adopts precision SMT process, which has stable performance and high efficiency. Your electronic devices can rely on Regulator USB Converter's stable power output. ????3. Convenient USB port design: The Step Down Power Supply Module has a single USB output port, which is very convenient to power your electronic devices. Whether it's a car screen, security camera, fan or any other compatible device, our converters ensure reliable power delivery. ????4. Advanced protection mechanism: We prioritize the security of your device. The 12V to 5V USB converter is equipped with overvoltage, overcurrent, overheating and short circuit protection mechanisms. This means that even if a malfunction or abnormal situation occurs, the converter will work normally once the problem is resolved. ????5.Multi-functional applications: Our USB converter is suitable for a variety of applications. Whether you need to power an LED screen, car GPS navigation system, MP3 player, car DVD, audio equipment or dongle, our waterproof buck adapter is the perfect solution. It can provide stable and efficient power supply for various electronic devices. Specification: Model: GYVRM-G120503 Type: DC-DC non-isolated step down module Input voltage: 8~22V Output voltage: 5V±0.25V Output current: 3A Output power: 15W Conversion efficiency: 96% Dimensions: 28*14*63mm / 1.10*0.55*2.48in Weight: Approx. 42g/1.5oz   Package l ist: 1 * USB Step Down Converter   Features: 1. Internal circuit board adopts precision SMT workmanship, stable performance and high efficiency. 2. Sealed silicone housing, waterproof, dustproof and anti-shock. 3. Single USB output port, convenient to supply power for electronic devices.  4. With overvoltage, overcurrent, overheat and short circuit protection, and can work normally after restoring to normal condition. 5. Widely used in LED screen, automotive GPS navigation, MP3, MP4, car DVD, audio, electronic dog, etc. Note : 1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. 2. Please allow slight error due to manual measurement. Thanks for your understanding. Package List