The size AAA are essentially for my LED lamps (small spotlights with motion detectors, candles and Christmas tree lights) or in my wireless mouse and keyboard.
This here in the format AA I use, among other things often in flashes and flashlights.
Why no "normal" batteries? Because I think it's corrosive, firstly, that it is the variety that you need does not guarantee is there and secondly because my nerves collection and disposal. Is quite different with the Eneloop batteries: recharge, use, recharge, use. :-)
Conclusion: dignity and I will buy again and again, if I'm going to reach the specified 2000 charging cycles during his lifetime or after the batteries no longer really should work. The supplied speakers are of course a cherry on top!
Therefore: full marks + buy recommendation!