I've owned original eBow couple years ago, and wanted to start using this tool again without hurting my budget. It does exactly the same as eBow, but on half the price.
At first I was concerned about the shape, but in the end it fits nicely in the hand.
Somehow I remember, that eBow had better quality plastic, so it slid better on the strings, however, my memories might be wrong, since it's been years since I held eBow in my hands.
Overall - great product for a good price