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A premium around-the-neck Bluetooth headset
Being a hero for those in need has never been easier
High density ceramic cavity can effectively reduce the low frequency distortion caused by cavity resonance
With cutting edge Air Charger Technology
Sennheiser HD 660 S - HiRes Audiophile Open Back Headphone HORIZON OUTDOOR A premium around-the-neck Bluetooth headsetBrand: Sennheiser Color: Black Features: Reference class open back, dynamic headphone employing new and improved transducers delivering low harmonic distortion Transducers are hand selected for precise ( 1 dB) left right matching tolerance insure exceptional accuracy and presentation of stereo spatial characteristics 150 ohm nominal impedance allows direct connection to home and mobile Hires audio devices Para aramid reinforced, detachable cables