Although I don't know about durability, I am satisfied with its value for money. It won't blast your ears with the volume, but it is satisfactory.

What is not mentioned is that it has True Wireless Stereo (TWS), meaning you can connect a second speaker that will play exactly the same.

Also, its Bluetooth reaches at least 6m, which I tested with walls in between, without any problem.

Two negatives:
1. The volume buttons have other functions, so if you want to increase or decrease the volume, you have to press and hold, while pressing once changes the song for example. This way, you can't always achieve the desired volume, but you might change the song.
2. There is a static sound in the Bluetooth. You won't hear it at normal volume, but when it is very low, you can hear it.

The battery is around 300mAh, if it fits your hand and you're dealing with it, it can hold a 18650 battery that will significantly increase the duration