Specifications:

Twin Socket Car Adapter with Two USB Port and Extension Cord
Input: DC12-24V 
Output: 5V2.1A,3.1A（total） 
2 USB ports 
One 12V/24V socket
With 1 meter straight cord
Fused protection
Maximum output current 8A 
with CE & ROHS  
Packing:

double blister
carton size:46*37.6*42.1cm/6pcs/inner box/72pcs/ctn