UE Megaboom
20 h, Rechargeable battery operated
UE Megaboom
20 h, Rechargeable battery operated
versus.com/de/ultimate-ears-megaboom-vs-ultimate-ears-wonder...
Here's a great comparison. I would definitely go for the Megaboom, especially if it's on sale right now ;)
I have the Megaboom myself and am very satisfied. Especially the bass is very rich for such a small speaker. (up to 65Hz. Wonderboom only up to 80Hz).
Two Megabooms can be connected to each other. If you want to operate them in different rooms, please note that the range is very limited due to the Bluetooth transmission (30m according to the manufacturer's specifications). Depending on the obstacles, walls, etc., the range may be much less.