Fetures :
Double 3.1 A USB Output 
PTTC over-current protect
Input voltage : DC 12V -24V
Output voltage: DC 5V
Output current : 3.1 A
Voltage measuring range : 5V - 25V
Current measuring range : 0-3.1A
Temperature measurement range : -20 degrees to + 80 degrees
LCD Digital Color: Random.

Specifications:
Size: 78*40*18mm
Net weight:32g
Weight:42g
Color:black
Application Models : for Ipod， for IPhone，Mp3/4 ，Camera 

Package Include :
1 x 3.1A Car Charger