First, I ordered this battery pack on 16th March; it was shipped on 17th March, and I received it on 20th March! Yes, 4 days in total from order to receipt! For standard free delivery! Excellent!
Also, and even better, I was one of the lucky ones to get it at 90% off in MITB's 7th Anniversary sale for only €1.66. Seriously - one Euro and 66 cents, including delivery! Incredible!
Anyway, it's just as described on the MITB page. Colours are randomly sent out; I got an orange one. The case seems to be made of aluminium, and it's shiny with no scratches or any imperfections.
It arrived partially charged. It is charged by plugging it into a USB port on a PC or laptop (or a USB charger rated more than 500mA) so when I did that it was fully charged in another couple of hours. According to the instructions, it's good for more than 500 charges, which is a lot.
It has a single silver button; when you press it once it lights up to four little blue LEDs, each light indicating about 25% of charge, so when all four are lit, it's fully charged. If you double-click the button when the lights are lit, the flashlight comes on, which is quite bright. Another double tap gives you a flashing light, and another gives you a slower flashing light. A single-tap on the button at any stage turns it off.
You charge the battery using either the USB lead that comes with it, or with any lead you've already got if it has a microUSB plug. You charge your other devices from the battery by plugging the lead into the 'output' side of the battery. All very simple, but it comes with comprehensive instructions in both English and Chinese, which are fairly easy to understand.
See my unboxing video at http://youtu.be/OKNmi0R4VYQ
Overall, excellent product, well made. Ridiculously low price, incredibly fast free delivery. Wonderful! Thanks, MITB.