Sentry HO643 Noise Reduction In-Ear Headphones (Pink) Use for TV, gaming, tablets, iPods, MP3 Players, smartphones, audio books, DVD and CD players, computers, laptops and more Ultra comfortable in-ear fit with soft silicone earpads; extra set of silicone pads included for easy replacement Frequency: 20Hz-20kHz; Impedance: 16 Ohms Noise reduction 4 foot cord length with 3.5mm plug