USB socket rated : 21W
Support charging for 4 mobile phone or 2 ipad at the same time
Rated power sockets: 110v-240v / Max: 500w
Input voltage: AC110v-240v / 50-60hz
Output voltage (charger) : USB – DC5V
Output current (charger) : USB – DC4.2A
Cable length:about 1.5M
Suitable for mobile phone，tablet，laptops and other mobile intelligent devices