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Breitling Avenger Chronograph 45 Night Mission V13317101L1X1

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Black Titanium - Green Bold, extremely robust, and shock-resistant, the Avenger Chronograph 45 Night Mission combines precision with a powerful design in a lightweight case. As a true Breitling Avenger, it can be used wearing gloves and offers unrivaled safety and reliability to any airborne adventurer. Green Dial with Arabic Numeral Hour Markers Black Titanium Case on Khaki Green Military Leather Strap Case Diameter: 45 mm Self-winding Automatic Movement 300 Meters / 1000 Feet Water-Resistant Product description Breitling Avenger Chronograph 45 Night Mission V13317101L1X1 men's watch. Features a brushed black titanium case and khaki green military leather strap. Brushed black titanium unidirectional rotating bezel. Green dial with luminescent hands and Arabic numeral hour markers. The date displaye

SENNHEISER HD 820 Over-the-Ear Audiophile Reference Headphones


  • The HD 820 delivers an unparalleled, reference-grade audiophile listening experience in a closed headphone
  • Innovative glass reflectors and frequency absorber systems replicate the wide-open characteristics of audiophile speakers in a sealed earcup design
  • 56mm Ring Radiator transducers and Glass Reflectors provide total immersion in your music with absolute detail and a breathtaking soundstage
  • Made in Germany using the finest materials for sound integrity, build quality, and luxurious comfort
  • Connectivity technology: Wired
  • Included components: HD 820 headphones, 6.35-millimeter cable, 4.4-millimeter Pentaconn cable, owner's manual




Sennheiser HD 820

Developed and manufactured in Germany, the HD 820 is a closed, reference-grade audiophile headphone that combines an innovative glass reflector and Ring Radiator transducer technology for a benchmark listening experience as vivid as it is uninterrupted.

Zero Compromise

The HD 820 fuses Sennheiser's bleeding-edge acoustic capabilities with exceptional reduction of ambient noise. Until now, the audiophile headphone experience could only begin with an open-back design or loudspeakers. The HD 820 sacrifices neither detail nor sound field by using breakthrough acoustical systems in a closed, dynamic headphone.

  • Reference-grade audiophile sound quality
  • Closed, noise isolating design for luxuriously private listening
  • Made in Germany from purpose-built materials
  • Ring Radiator transducers for incredible detail and extension
  • Glass Reflector plates with an internal absorber system mimic the open sound of loudspeakers

Reflecting Within

The reference-class experience of the HD 820 is achieved with the use of precision concave glass reflectors, one capping each earcup. These functional plates reflect energy from the rear of the driver to a specially tuned absorber system, allowing the waves to mimic the behavior of open headphones such as the HD 800 S. The result is a sound stage never before experienced in a sealed headphone. The headphone’s vibration-damping headband provides complete stability while reducing crosstalk. What you put into the HD 820 is precisely what you will get out of it. Each transducer is manufactured, tested, and measured to an extremely tight tolerance to ensure the most dependable performance out of the box. Each HD 820 also includes the frequency response plot unique to that set’s serial number, sparing no resource to help you retrieve the most critical details from every corner of your music collection.


Fellowship of the Ring

The 56mm Ring Radiator transducer found in the HD 820 leverages the key benefit of a large diaphragm speaker—air displacement. Both outer and inner edges of the “ring” are secured to the drive unit to keep it rigid for fast rest and response times. The result is an accurate response spanning the entire frequency spectrum.



Let’s take a look at the specifications...

  • Frequency response: 6 – 48,000 Hz
  • Impedance: 300 Ohms
  • THD: <0.02%
  • Sensitivity: 103 dB at 1 kHz, 1V
  • Cable: Detachable, 3 meters (9.8 feet) length
  • Weight without cable: 360 grams (12.6 ounces)
  • Included accessories: 3-meter cable with 6.3mm stereo plug (¼ inch), 3-meter balanced cable with 4.4mm Pentaconn plug, USB manual with frequency response plot, deluxe storage box







About Sennheiser

Sennheiser is shaping the Future of Audio – a vision built on a 75-year history of innovation and a continued drive for excellence that is woven into our company’s DNA and culture. Around the world, our employees share this passion in the pursuit of the perfect sound, creating products that exceed expectations and set new benchmarks in audio.

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