1.In ear earphone for iphone 2.Sensitivity:100dB/mW 3.6-23, 000Hz ... bule 1, Powerful, bass-driven stereo-sound 2, Perfect fit in the ear canal and good attenuation of ambient 3, ... Noise due to ear-fit rings in different sizes(included in the delivery) 4, Ldeal for ... portable game 5, Systems with headphone sockets 6, In-Ear Headphones classic models. Two-turbine effectively enhance the sound ...