Sennheiser pmx680 nickband headphone

Sennheiser PMX-680 Neckband Headphones The PMX 680 is the latest evolution of neckband fit headphones from Sennheiser, and for this version they have co-branded the product with Adidas. The styling is mostly black in color and is accentuated by bright green striping along the neckband along with a bright green cable.

The “behind the head” neckband fit is traditionally used for providing extra support to the ear pieces in order to keep them from falling out while exercising, and the same is used for the PMX 680.

A unique feature called the “neckband vertical transducer system” is the highlight of this set of headphones, as it is intended to absorb the impact of running/exercising and to keep the headphones firmly in place regardless of how hard you are exercising.

The neckband also offers a universal fit - no adjustments are needed to accommodate different head sizes or head shapes. The Sennheiser PMX 680s make a compelling choice as a reasonably nice sounding set of headphones for anyone who has been frustrated by earbuds or earphones falling out.

Other headphones can make the same claim, but often are uncomfortable to wear over long periods of time. The combination of comfort and a sure-footed fitting is where the PMX 680s truly shine. &nbsp Specifications

1)Frequency response: 18-20,000

2)Cable length: 1.64 feet with 2.3 feet extension

3)Sound pressure level (SPL): 120 dB

4)Ear coupling: Verticle Earbud

5)Impedance: 16 ohms

6)Connector: 1/8 inch (3.5mm) iPhone compatible

7)Total harmonic distortion (THD): <0.5%

8)Weight w/o cable: 0.63 ounces