Specification:
1) Material: PC
2) Product size : L66.5*W38*H33(mm)
3) Interface: 2USB
4)Plug style: US plug
5) Input: AC100-240V ,50-60HZ
6) Output: DC5V1 A/5V2.4 1A (3.4A max)  
7)Power:17W
9) Function: Charging
10) Certification :CE, RoHS FCC
11) Warranty period: 3years

Features:
1) Adaptively charge almost any USB-powered device including Android and iOS phones.
2) This compact USB wall charger easily slips into your backpack and charges your gadgets wherever you go
3) Built-in safeguards protect against excessive current, overcharging, and overheating

Advantages:
(1) PCB inside:  FR4 material ,same as the Computer and Mobile phone's inside PCB board ,Some bad quality suppliers used Paper as PCB board .
(2)Working Voltage: The maximal working voltage range can be AC100-300V .50-60Hz
(3)Shell thickness: PC material, Its thickness is 1.6mm ,Suit for RoHS  standard , and Flame retardant
(4)Line loss compensation function:  Almost all mobile charging cables with line loss when they working ,for example DC5V USB cable ,deduct its line loss ,finally ,it is only 4.5V or 4.8V etc. less than DC5V . Our mobile chargers can compensate the DC0.5V to make the mobile charging cables work at DC5V
(5)When Phone power off, charge phone 5mins ,can reboot .