[. . . ] Great sound wireless transmission. and PX 360 / PX 360 BT PX 360 PX 360 BT The PX 360 BT are high-end collapsible Bluetooth® stereo headphones offering an outstanding wireless listening pleasure due to Bluetooth® 2. 1 wireless transmission. [. . . ] Transducer principle Frequency response Impedance THD - Total harmonic distortion Sound pressure level (SPL) Battery type Bluetooth® version Supported profiles Battery play time Content of delivery West: 4044156027241 East: 4044155043839 West: 615104140097 East: 615104168305 West: 502380 East: 502799 dynamic, closed 15 ­ 22, 000 Hz 32 <0. 1% (1kHz, 100 dB SPL) 110 dB (1 kHz / 1 Vrms) PX 360 BT West: 4044156027258 East: 4044155043846 West: 615104140110 East: 615104168312 West: 502381 East: 502800 dynamic, closed 15 ­ 22, 000 Hz 590 / 100 (active/passive) <0. 1% (1kHz, 100 dB SPL) 107 dB (1 kHz / 1 Vrms) 3. 7 V rechargable Lithium Polymer 2. 1 + EDR ( 10m) A2DP, AVRCP 8 h (with Bluetooth® & NoiseGardTM), 10 h (only Bluetooth®), 20 h (only NoiseGardTM) PX 360 BT, single-sided audio cable, inflight adapter (3. 5 mm double mono jack) 6. 3 mm gold adapter plug multicountry charger, USB charging cable , rechargeable LithiumPolymer battery, carrying case reclosable window cardboard box 176 x 100 x 227 mm 410 x 360 x 285 mm 736 g 6 West Version: English, French, Spanish, Portuguese, German, Italian, Dutch East Version: English, Russian, Polish, Turkish, Chinese short, Chinese long, Korean 10 h 1 PX 360, 1 6. 3 mm adapter plug, 1 carrying case Packaging Packaging design Dimension of product packaging (l x w x h) Dimension of master carton (l x w x h) Weight of product and packaging No. of products per multi-pack Packaging languages reclosable window cardboard box 176 x 100 x 227 mm 410 x 360 x 285 mm 441, 5 g 6 West Version: English, French, Spanish, Portuguese, German, Italian, Dutch East Version: English, Russian, Polish, Turkish, Chinese short, Chinese long, Korean 538376 05/10 Printed in Germany Sennheiser is a registered trademark of Sennheiser electronic GmbH & Co. www. sennheiser. com The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth® SIG, Inc. KG is under license, apt-X® is a registered trademark of Audio Processing Technology Ltd, iPod and iPhone are trademarks of Apple Inc. The PX 360 headphones offer an excellent sound reproduction while their closed, circumaural design effectively blocks out ambient noise. Their headband is metal-reinforced ensuring portability and durability, while the ear cups can be rotated to a full 90° which then take up less space when stored in the carrying case. [. . . ] Neodymium magnets and Duofol diaphragms for excellent sound reproduction Closed, circum-aural design offers a high passive attenuation of ambient noise Collapsible, metal-reinforced headband ensures portability and durability Optimised for MP3, CD and DVD players, iPod, iPhone and mobile phones (3. 5mm stereo plug) 2 year warranty [. . . ]