The cordless interference-free - finally

Sennheiser is a brand rather known worldwide helmets, so it is a priori a guarantee of sound quality. Well, it's a wireless headset, so unfortunately there is no seat at all in serious good wired headset. Its closest equivalent would be wired to me an HD 218. So the next one is his entry at Sennheiser.
The great advantage of this helmet is the absence of parasites related to wireless technology that is decidedly upscale. I enjoyed the absolute silence and very low distortion.
Pleasant, aesthetic, apparently quite reliable, sufficient range to an average apartment ... in short I am quite satisfied with my purchase. Autonomy rechargeable batteries is correct but you have the advantage of having a quick charger handy, because 16 hours of recharging the headset is a long time ...

So most of the product:
- Reliability of the new wireless technology (well there's no crackling)
- Nice enough class ergonomics and design.
- The helmet is closed it provides valuable insulation against external noise
- Easy start in a few minutes you can listen.

I would have given five stars to this helmet, but I did not like:
- Blister packaging (disposable) unworthy of headphones to this price level
- The correct sound quality but no more (this is relative, but significantly worse than even HD 595 HD 555, certainly)
- The cooldown super long battery
- It heats the ears over time, but that's normal for a closed headphone
- An overpriced hair for its sound performance, but you pay for it without near-perfect wireless (limited to a maximum of 20m)