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Sennheiser’s supra-aural MM 400-X headphones integrate wireless Bluetooth 2.1 technology, a discrete microphone, cushioned ear pads, and a DuoFol transducer system. The MM 400-X additionally features a 15 – 22,000 Hz frequency response, and 107 dB/mW sensitivity.
- Wireless Bluetooth 2.1 technology
- Discrete microphone
- Cushioned ear pads
- DuoFol transducer system
- 15 – 22,000 Hz frequency response
- 107 dB/mW sensitivity
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