My son has been using this for quite a while now. I purchased it when he went off to uni so there was no problem with me Gerri g hold of him... I requested he left it in his Ruck sack ready if need be...It's a great power bank, lasts ages and things charge very quickly off it. The unit itself takes quite a while to charge up but it holds a lot of power so not surprising... he said his phone was charged with it more than once before he had to recharge it ..has two usb ports and on micro usb that you use to charge the device itself. Can be charged whilst charging other devices which is really handy ... smart led lights show level of charge available
a little lightweight but a great buy