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Wireless Bluetooth technolgy Dynamic closed back design
Optimized for portable audio
Single sided cable eliminate tangles
Product Packaging:Standard Packaging Wireless noise cancellation head phone From the Manufacturer The ideal headphones for frequent fliers who want to be enveloped in their music rather than the drone of outside noise, the Bluetooth-enabled Sennheiser PXC 310 BT noise cancelling headphones provide a detailed sound image, while patented NoiseGard-2.0 technology minimizes background noise in trains or planes. Click here for a larger image. The PXC 310 BT combines all the advantages of travel headphones with the new apt-X Bluetooth codec--a sophisticated audio compression technology for true hi-fi quality when paired with a Sennheiser Bluetooth adapter (sold separately)--for wireless listening while on the move. It's compatible with countless Bluetooth enabled digital audio devices. These closed mini headphones are embedded with NoiseGard 2.0 technology, which provides up to 90 percent active noise cancellation. They are also equipped with TalkThrough function, which is able to distinguish between background noise and speech, enabling you to continue your conversations with fellow travelers without removing the headphones. When not in use, the PXC 310 BT can simply be folded away and stowed in the included carrying case. Convenient extras also help to make your journey more comfortable. To ensure that the lithium ion batteries for wireless use can be recharged anywhere in the world, the set includes a battery charger with adapters for a wide range of different countries. Sennheiser's NoiseGard Technology Sennheiser's NoiseGard 2.0 technology guarantees undisturbed music enjoyment and ensures that you have a relaxed journey. Irritating background noise is minimized by anti-noise, a technology that was initially developed for pilots and which has already been used successfully in the cockpits of major airlines for several decades. And if you want to talk to the person sitting next to you, that's no problem either. The convenient TalkThrough function enables you to conduct a conversation without removing the headphones. At the push of a button, miniature microphones mounted on the outside of the headphones pick up the surrounding sounds while an electronic circuit filters out the voice of the person speaking to you and plays it clearly through the headphones. What's in the Box PXC 310 BT headphones, detachable audio cable (2.5 mm to 3.5 mm jack plug), in-flight audio adaptor (3.5 mm double mono jack), 1/4" (6.3 mm) audio adaptor, USB charging cable, multi-country wall charging adapter, rechargeable Lithium polymer battery (BA 370), carrying case Specifications Wireless technology: Bluetooth 2.1 + EDR; supports A2DP, AVRCP profiles Range: Up to 33 feet Noise cancelling: Up to 90 percent Noise cancelling technology: NoiseGard 2.0 (with TalkThrough) Frequency response: 15 - 22,000 Hz Sound pressure level (SPL): 107 dB Ear coupling: On-the-ear Transducer principle: Sealed (closed) Battery: BA 370 - 3.7 V Rechargeable Lithium Polymer Operating time: Up to 20/12/8 hours (NoiseGard/Bluetooth/NG+BT) Standby time: Up to 200 hours Charging time: Approximately 3 hours Impedance: 100/590 ohm (Active/Passive) Total harmonic distortion (THD): <0.1 percent Connector: 1/8-inch (3.5mm) Cable length: 4.9 feet, detachable, single-sided Compatibility Optimized for MP3, iPod, iPhone (iPod and iPhone are trademarks of Apple Inc. registered in the U.S. and other countries), and portable media players. Warranty The Sennheiser PXC 310 BT is covered by a 2-year warranty with the backing of Sennheiser's worldwide service network. Also great with in-flight entertainment systems.