Here is my experience about the product:
The packaging is understated. The device is well verarbeiet. The good thing about cable is that there are still longer than the usual chargers. I think that's very advantageous if the outlet is even further away from the place where you sit or can take the smartphone. The cable is also thick and one has the impression that it lasts a long time. The charger has a red LED indicator. It lights up when the charger is plugged into the wall outlet. Here would be another indication when the device is fully charged and draw no more charging current. But at this price point you can probably not expect such "Niche to have" features.
For testing, I have two different Android devices, an Acer Liquid E1 and one Acer Liquid S2 used. Both devices would be fully charged without problems.
Also worth mentioning is that the travel charger can deliver up to 1000 mA current. This is a good value under the simple chargers. So this charger should be compatible with most smartphones. But better times inform or look at the on the current charger, what this provides for a charging current.
Conclusion: If a simple and functional travel charger with max. 1000 mA and a micro-USB connection investigated, which will find it here.