... power bank for smart phone mobile phone iphone with LCD display screen 4400mah Specification .Model number: SG-U4400. Compatible: MP3, MP4, ... , easy to carry. can charge anywhere &anytime.2. LED display screen,can see the charge power percentage,More convenient. 3.Have ... light UV technology, lightweight, easy to carry. 2.LED display screen,can see the charge power percentage,More convenient. 3.When ...