What me beside the compact size is good like the intuitive operation. You have to press any buttons or note something. The charging cable is stored already in the device and can insert and remove easily. Charging starts automatically when you plug in the phone. This is signaled by a blue LED. When the battery is all or the phone is fully charged, the discharge process will automatically stop.
For Iphone users even a Lightning adapter is integrated in the device. Those like me who has both an Android and an Apple phone, not even have to rethink, because both ports are available on the device!
The power bank is loaded simply with the supplied cable. Due to the small capacity and a charging current of 1A, the Power Bank has been fully charged quickly.
As described in the manual are for voltage conversion about "real" 1800mAh available. These are the Galaxy S5 about 70% of the battery capacity and that is enough to bridge an emergency situation.
Conclusion: This battery is a practical tool that an ultra-compact emergency battery for the car, drawer, Rucksack etc. Search which allows you to bypass an emergency until the next socket loose.
Normally I mention no packaging, but here you have given really times much trouble. The packaging is very high, so that this gadget also ideal in my opinion as a gift.