Established in 1999, Dianmen Digital Technology Co., Ltd. is one of the leading China portable headphone manufacturer and wholesaler of audio, video and communication products in China. We can offer you the complete OEM & ODM portable headphones service, including, but not limited to, the products designing, moudling developing, the plastic injection and hardware producing, firmware designing and products producing. We have established an integrated set of QA system of efficiency, which strictly administrates through the whole process including design, manufacture, sales and service. All of key processes for quality control are performed according to ISO9001:2000, CE, FCC, E-MARK and RoHS. Also we collect and offer cool and the newest 2009/2010 fashion products to you.

Frequency response: 15-25,000 Hz
Titanium-coated high-polymer titanium diaphragm for accurate sound Reproduction
Foam ear cushions for open "hear through" sound
Volume control on cord for easy level adjustment
Reliable L plug for improved durability and reliability
A Portable headphone is a headphone that is used on-the-go. Portable headphones tend to be smaller, more lightweight, and may have features that lend themselves to listening on-the-go, like carrying cases or collapsible headbands.PRODUCT FEATURES:Titanium layered diaphragm for accurate sound reproduction;Foam ear cushions for an open, hear-through sound;Adjustable headband with sling for a comfortable and secure fit;Volume control on the cord for easy level adjustment;Includes 1/8" and 1/4" stereo plugs for home and portable use. Thanks to Koss's folding design, these headphones collapse down to a more manageable size. Includes -. 25 adapter plug, user's manual & warranty information Color - Silver & Black

Wide, 15 to 22,000 Hz frequency response
Titanium-coated, high-polymer diaphragms deliver accurate sound
Neodymium iron boron rare-earth-magnet structures for accurate sound reproduction
Oxygen-free-copper voice coils for high signal clarity
Closed leatherette ear cushions for maximum isolation and deep bass
Home and portable audio take on fresh life with quality headphones, and Koss's lightweight, closed-ear UR40 is designed to keep outside noises out and headphone sound in--perfect for use in busses and libraries alike. With its extended frequency range of 15 to 22,000 Hz, you'll never miss a single bass note or want for high-frequency splash or shimmer. The UR40's titanium driver elements ensure taut low end and clear treble, while its collapsible headband design further lends it to portable applications and protects the headphone when not in use. The headphone comes with a four-foot, dual-entry cord and a .25-inch stereo adapter for use with hi-fi components. Koss UR40 Folding Over-Ear Headphones - This set of headphones from Koss allows you to enjoy the quality of an over-ear headphone anywhere!

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