Main Features‎:‎By hot pressing and delicate carving process of the duralium shell which makes sound more pleasant and fullSuper bass‎,‎ suitable for all kinds of music style like pop‎,‎ rock‎,‎ country‎,‎ etc‎.‎Super soft earplugs‎,‎ make you feel comfortable no matter how long you wearWith microphone‎,‎ support hands‎-free callsSuitable for cellphone‎,‎ MP3‎,‎ MP4‎,‎ laptop‎,‎ tablet‎,‎ etc‎.‎ Brand‎:‎ Plextone Model‎:‎ X37M Wearing type ‎:‎ In‎-Ear Function‎:‎ Answering Phone‎,‎Microphone‎,‎Song Switching‎,‎Voice control Headset type‎:‎ Dynamic Connectivity ‎:‎ Wired Connecting interface‎:‎ 3.5mm Application‎:‎ Computer‎,‎Mobile phone‎,‎Portable Media Player Plug Type‎:‎ 3.5mm Cable Length ‎(‎m‎)‎‎:‎ 1.3 m Driver unit‎:‎ 10mm Sound channel‎:‎ Two‎-channel ‎(‎stereo‎)‎ Frequency response‎:‎ 16 ‎- 21000Hz Impedance‎:‎ 16ohms Sensitivity‎:‎ 107dB Package weight‎:‎ 0.081 kg Package size ‎(‎L x W x H‎)‎‎:‎ 15.00 x 9.10 x 2.80 cm / 5.91 x 3.58 x 1.10 inches Package Contents‎:‎ 1 x PLEXTONE X37M 3.5mm Plug Headset Super Bass Stereo Metal Line‎-control Headphone‎,‎ 2 x Pair of Ear Bud