1.In ear earphone for iphone 2.Sensitivity:100dB/mW 3.6-23, 000Hz 4. ... of ambient 3,Noise due to ear-fit rings in different sizes(included in the delivery) 4, Ldeal for use with all MP3, CD ... , VCD, MD players and portable game 5, Systems with headphone sockets 6, In-Ear ... : 6-23, 000Hz 10,To bear the greatest power: 100mW in ear earphone for iphone