Feature:
Input voltage: DC8-22V, (12V changes to 5V) ATT: Please do not use in DC 24V Truck Bus Boat
Auto protection: Over current, Over temperature, Short circuit, It can be and can work in normal condition when restored.
Long term stable and reliable quality. Super-thin, small size, high efficiency, easy installation and use.
Easy Install Wire Charger for Car DVR Camcorder GPS Tablet Phone Device
Specifications:
Rectification: synchronous rectification
Input voltage: DC 12V (8V-22V) 
Output voltage: 5V
Output Current: 3A/10W (MAX), Can work at below 2.5A for long time. 
Conversion efficiency: Max 96%
Cable Length: 135cm/53"
Converter Size: 42x20x10mm/1.65x0.79x0.39"
Quantity: 1 Pc
Note:
Please allow 1-3mm error due to manual measurement. 
Package Contents: 
1 x Power Converter