|Transducer principle (Microphone)||ECM|
|Sound pressure level (SPL)||110 dB (1 kHz/0 dBFS)|
|THD, total harmonic distortion||< 0.3 % (1 kHz, 100 dB SPL)|
|Transducer principle||dynamic, closed-back|
|Pick-up pattern||Omni-directional microphone Single mic|
|Operating time||25 hrs (music playback via SBC) with headphones' rechargeable battery|
|Power supply||built-in rechargeable lithium-polymer battery: 3.7 V ⎓, 190 mAh USB charging: 5 V ⎓, 100 mA max.|
|Operating relative humidity||Operation: 10 to 80%, non condensing Storage: 10 to 90%|
|Temperature Range||operation: 0°C to +40°C charging: +10°C to +40°C storage: –20°C to +60 °C|
|Charging time||up to 3 hrs|
|App support||Sennheiser Smart Control App for iOS™ and Android™|
|Frequency response||20 Hz to 22,000 Hz (-10 dB)|
|Frequency response (Microphone)||100 Hz to 10,000 Hz|
Great product, I’m just waiting for the battery replacement as it seems faulty, it’s a pitty it happened, still bought some other Sennheiser products and they’re working well
Quite a few wireless headphones are prone to boom the bass frequencies which for leads to a kind of forced listening experience. These headphones are of course not as clear and rich as my cabled Sennheiser Momentum M1 (over-ear) but have a very well balance sound profile which I prefer. I listen to almost all music from choir and classical music to heavy rock and house music and quite often with my primary focus on the listening. These headphones are more tha well worth their price if you want nice and clean sound when you are away from home.
I'm not a specialist but Thank for this product, i'm happy with it.
Sound is clear with good balanced bass. The whole thing fit well on the head and is light weighted making itself forgotten. Earings cover well.
There is a micrologiciel embeded which allow update of the product when you're online.
Battery seems ok.
Pearing is easy.
May be a future update will solve the only flaw i see : If you'd like to go from min to max (or from several range of volume) you're obligated to push button as many time as needed (Vs keeping it pressed once untill volume needed).
But anyway a good device for me.
HD 250BT Phased Out
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