The small makes a rather robust impression and comes in a very chic aluminum housing.
Please take into account for the first charging 5 hours, preferably using an external USB power adapter, because with a rated current of 500 mA from a normal USB port dauerts at 4400mAH charge a geraumes while ...
Like Wers slightly cheaper, is under the name of gum per an equivalent of the performance battery pack in a simple plastic housing.
Conclusion: Not cheap, but useful when the nearest outlet is far away again ...
