My first vibrator ate through button batteries like nobody's business so I saw this one and thought I'd upgrade..it’s better than the current one and is rechargeable!! Glad I did. It's quite small and discreet, I guess it would be good for travelling.
I only really use the first and second settings, but there is a nice selection of different patterns. Works well, is reasonably quiet and is undetectable if you close the door and hide under the duvet (as an experiment I left it running and left the room: couldn't hear it at all with the door closed).