Maximo Imetal IM-490 Isolation Earphones Tuned for Ipod Tuned for iPod, iPhone, MP3, and Smartphones. High-fidelity 9mm Neodymium drivers 2.5mm adapter, 2-ft extension cable Premium carrying case, 3 pairs/sizes (L,M,S) of eartips Frequency response: 18Hz-22KHz, Sensitivity (1KHz, 0.1V): Over 100dB. Maximum SPL output: Over 120dB