FSL Zinc Zn30 Earphones/In Ear Headphones for All Portable Devices - 3 Year Warranty - (Metallic Red) Powerful bass balanced with superb mid and high end detail Made of premium quality galvanized zinc alloy, these headphones are so robust they'll never fall apart Includes four pairs of silicone tips (XS, S, M, L), a pair of double flange tips, a pair of expanding foam tips, 3 sizes of ear fins for extra grip in the ear and ear hooks for those who want to wear over the ear Noise isolating for natural noise cancellation. Specifications: Frequency range 20 - 20,000, Impedance 16 Ohms, Driver diameter 8mm, Sensitivity 96dB, Cable length 1.2m, Max input power 10mW, Jack 3.5mm gold plated Tangle free cable, hard case included, 3 year no hassle warranty. Dedicated FutureSoundLab website for warranty and support.