The Made for Kindle Performance headphones from Tribeca offer a high quality way to listen to music, movies and more. The genuine repurposed ebony wood chamber delivers a warm sound. These headphones feature an adjustable head strap, padded ear cups for comfort as well as sound isolating over-ear design. Molded angled plastic plug with 3.5 plug and 4 pole jack. Wooden plugs on branch cables have "R" and "L" printed on them. One button remote with mic. The advanced split black nylon braided cable reduces signal loss and detaches for easy storage. The driver unit features a moving coil speaker with neodymium magnets. The speaker size is 40mm with 18Hz-22Hz frequency response. Sensitivity is 110+/-3dB at 1kHz, 1mW. The output power is 10mW rated with a 20mW max.  Fantastic listening quality and power, the Performance Headphones from Tribeca will not disappoint. Tribeca - ROAM IN STYLE.