I use it on my "old" Archos Jukebox Recorder, in conjunction with the Rockbox software. As you can the Bass (Super Bass) push something else, but of course you can not expect miracles in the little membranes.
The sound is good and offers a balanced middle and clean treble. The bass range is, as with all Mini Speaker, a bit thin. The achievable (total) volume sufficient to provide sound a normal sized (hotel) rooms reasonable (loud!), Or if in the garden a little background music from MP3 players working to implement loud enough.
The battery life I have not tracked, but is thanks Eneloop batteries pleasantly long.
The only significant drawback is the somewhat chunky shape which is not exactly cheap place to stow. The larger and more expensive sister model TFT 500 with 2 diaphragms per channel sounds the way mE much worse !!
My Applications, mostly on the MP3 Player:
- Garden And Terrace
- Missions / Short Trips (Hotel)
- Caravan / Camping
- Picnic
For the 30-35, - EUR but you can not do wrong with the HAMA part and probably not find better. 4 stars, 1 for less Baßschwäche.