Yeeco DC 8-50V 12V 24V to 5V Buck Voltage Converter Transformer Power Supply Module 15W 3A Step Down Voltage Regulator Reducer for LED Cell Phone Car Recorder MP3/ MP4 (Female & Micro USB Connector) Car MP3 MP4 power supply, Input voltage: DC 8-50V Output voltage: DC 5V Output current: 3A MAX ( within 2A is more recommended for long time work) Output power: 15W MAX, 13-14cm installation wires, 35cm output wire Operating temperature: -40 -80 , Over-current protection: 2.5A Size: 46*32*18mm, with over-temp/ over-current/ short-circuit/ over voltage protection