The ProMini Power Station A4 is really useful because I can charge up to six items in one go all at the same spot!
It has passed safety tests as shown on the label.
In the box, there is an extra copper USB cable which comes in handy.
When the power station is plugged, there is a blue light on the side to indicate that it is on and there is a safety on/off switch on the left.
More information on ProMini Power Station A4:Magic-Pro：http://www.magic-pro.com/?route=product/category&path=60 HisTrend.HK：http://www.histrend.hk