Are the two USB outputs as well as the Power button on one of the short sides. A small micro-USB port is available for charging the battery bank. For unit 2 different lengths are included USB (micro USB) cable. One can serve to recharge the battery bank or two cables are each connected to a charging device for the battery bank. Unfortunately, no power plug for the socket is included. You can use any power cord (eg by phone).
The device makes no sounds or NOISE by itself. When you turn it, show up to 4 blue LED lights on the remaining battery capacity of the battery bank.
For the first load tests we used with a Samsung Galaxy S4 and an older LG smartphone. Both went smoothly and quickly. Charging both completely empty smartphones did not irrelevant longer. The store also works with the Apple iPads / iPhones. Here one must then, however, the original cable from Apple Connect, but continue no problem. If the device to be charged fully, the external battery will automatically stop the charging process. We have this battery bank is now used and recharged several times and been able to detect any deterioration of the battery.
The German-language instructions are easy to understand and in detail.
By decent packaging this battery bank is also as a gift a nice touch. Especially with the technical products I've seen the worst packaging (that's why I mention it like to).
Conclusion: Especially if you have a job outside of buildings, it is worth the battery pack in your pocket carry. Ideal is also at the campsite, etc. I am very satisfied and recommend further the EasyAcc battery bank also good conscience.