Specifications

1)DC DC Converter Step-Down Buck Module 12V to 5V 3A 15W,5V usb output power adapter
2)Good quality,fast shipping

Features : 
-Use imported and integrated switching regulator modules manufacturing,
quality is stable and reliable.
- Synchronous rectification,, the conversion rate is 96% or more, very low heat.
- Over voltage, over current, over temperature, short circuit, it can be auto protection,
and can work in normal condition when restored.
- Epoxy potting, seismic, water, moisture, dust, long term stable and reliable quality.
- Super-thin, small size, high efficiency, easy installation and use.
- Input voltage: DC8-20V, (12V changes to 5V)
- Output parameter: DC5V3A, 15W
- Size: 46x27x14mm

Notice: it can't use for iPhone ,ipod.  Samsung Galaxy S4