Automotive DC 12V to 3.3V 3.7V 4.2V 5V 6V 9V Waterproof Booster Converter Regulator for Car Gadgets and Home Projects

Completely new and superior quality! Structure: Plastic cover with metal Wiring instructions: Input: Positive (Red wire) / Negative (Black wire) Output: Positive (Yellow wire) / Negative (Black wire) Overall size: 4.6*2.8*1.4cm Pack contains: 1 item Kind reminder: Manual measurement may lead to 2%-3% difference; refer to above dimensions. Due to color display differences on computers, actual product color could be slightly different. Thank you. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.