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The new Sennheiser HD 4.40 BT offers high-quality wireless sound for every day listening on the move. The closed-back, around-ear headset features Bluetooth 4.0 and aptX compatibility to deliver true Hi-Fi sound with satisfyingly dynamic bass. Its elegantly minimalistic design has been crafted from robust, high-quality materials to meet the requirements of the street. The closed-backed design of this headset is fitted with proprietary Sennheiser drivers that came a long way before being allowed to transmit sound to your ears. So, enjoy their well-balanced, amazingly detailed sound with dynamic bass.

  • Listen to well-matured sound w/ well-balanced audio & dynamic bass
  • Connect immediate & simple pairing w/ compatible devices w/ Near Field Communication (NFC) and Bluetooth 4.0
  • Take calls, change tracks & adjust the volume using the intuitive ear-cup mounted controls and integrated microphones
  • Enjoy comfort during extended listening sessions w/ the around-ear design & deep, ergonomically-designed ear pads
  • Make a statement of timeless class while staying comfortable w/ its elegant & minimalistic design


  • Color: black
  • Materials: plastic, vinyl ear pads
  • Product dimensions: 10.2"H x 7.1"L x 3.9"W
  • Impedance: 18 Ω
  • Frequency response (microphone): 100 - 10,000 Hz
  • Frequency response: 18 - 22,000 Hz
  • Sound pressure level (SPL): 113dB (passive: 1kHz/1Vrms)
  • THD, total harmonic distortio: <0.5% (1kHz/100dB)
  • Pick-up pattern: dual omnidirectional microphones
  • Battery specification: Li-ion polymer battery
  • Codecs: AptX
  • Manufacturer's 2-year warranty


  • Sennhesier HD 4.40 BT Over-Ear Headphones


  • Ships to Contiguous US
  • Expected Delivery: Oct 22 - Oct 29