Description‎:‎This KEENION KOS ‎- E001 In‎-ear earphone provides for you with a secure‎,‎ comfortable‎,‎ noise‎-isolating fit while delivering clear and dynamic sound‎.‎ It is suitable for most of the 3.5 mm interface of mobile phones‎,‎ MP3‎,‎ MP4 and other multimedia player use‎.‎ Main Features‎:‎Noise‎-isolating and soft earphone1.2m cable length10 ‎- 28KHz frenquency response28Ohm ± 15% impedanceSuitable for mobile phone‎,‎ MP3‎,‎ MP4‎,‎ tablet PC and other devices with 3.5mm interface Model ‎:‎ KOS‎-E001 Color ‎:‎ Assorted Colors Wearing type ‎:‎ In‎-Ear Function ‎:‎ Noise Cancelling Headset type‎:‎ Dynamic Connectivity ‎:‎ Wired Connecting interface ‎:‎ 3.5mm Application ‎:‎ Portable Media Player‎,‎ Computer‎,‎ Mobile Phone Plug interface‎:‎ Full‎-sized Cable length ‎:‎ 1.2m Driver unit‎:‎ 10mm Frequency response ‎:‎ 18‎-20000Hz Sensitivity ‎:‎ 110 ± 3dB Package weight‎:‎ 0.096 kg Product size ‎(‎L x W x H‎)‎ ‎:‎ 120 x 2.2 x 1.2 cm / 47.2 x 0.9 x 0.5 inches Package size ‎(‎L x W x H‎)‎ ‎:‎ 13 x 10.2 x 2.8 cm Package contents‎:‎ 1 x In‎-ear Earphone‎,‎ 2 x Pair of Earbuds