Well, it doesn't do very much!
I buy a fair bit of Aliexpress, usually €1/€2 items, little tools or photo and camping accessories and while not great quality they usually do a grand job for the price, and its usually stuff you cant actually buy in a walk in shop. Before Ali it was DealExtreme. Only occasionally will I buy something electronic...
Both are of similar size, both take micro SD, and charge by micro USB. The older one has a nicer card slot - pops in/out, the newer one a bit tricky to get the card out.
While I didn't expect either to be great, the first was bought as a novelty (and at the time was more than that), and the second was bought for some experiments.