Overviews : 
Full-Speed Charging: 4 Ports DC5V/4A could max up to a 24W output, available for charging four devices simultaneously
Smart IC Technology: Automatically detects and delivers the optimal charging current for Samsung Galaxy S8/S7, LG G6/G5, iPhone7/6s/6,Nexus, HTC and other USB-charged devices- ensuring the faster, more efficient charge
Portable Size for travel: Compact design, 100v -240v input, weighs only 7 oz - ideal for home, business, and travel
Safe Guarantee: Anti-fire material with premium quality. Sophisticated circuit design with over-heated, over-current, over-charging protection.

Specification : 
Type: AC Adapter with USB Slot 
Input: 100-240V, 50-60Hz, 0.5A 
Output: 5V---4.2A (max) 
USB Port: 4 Port 

Package : 
1 x 4 Port USB Travel Wall Charger