Sentry HO484 Metalix In-Earbuds with Case, Red Use for TV, gaming, tablets, iPods, MP3 Players, smartphones, audio books, DVD and CD players, computers, laptops and more Includes a carrying case, and an extra set of silicon ear pads for easy replacement Frequency: 20Hz-20kHz; Impedance: 16 Ohms Premium 3.5mm audio jack for no-loss audio sound connection to device 4 foot long cord with in-line volume control, and 3.5mm plug