Main Features‎:‎● Adjustable headband‎,‎ wear comfortable● An in‎-line omnidirectional microphone that picks up your voice without having to talk directly into it● 3.5mm plug compatible with all devices‎,‎ for iPhone‎,‎ smartphones‎,‎ tablets‎,‎ androids‎,‎ ect● Portable folding design‎,‎ easy to carry‎,‎ music companion for travel essential● Headphone sensitivity‎:‎ 106db● Microphone sensitivity‎:‎ ‎-52db±2dbNote‎:‎ Due to the earphone is produced by different batches‎,‎ the color of cable is black or the same as the color of headphone‎.‎ Be aware of this before you buy it‎.‎ Function‎:‎ FM function‎,‎Microphone‎,‎MP3 player‎,‎Song Switching‎,‎Voice control Connectivity ‎:‎ Wired Connecting interface‎:‎ 3.5mm Application‎:‎ Computer‎,‎Mobile phone‎,‎Portable Media Player‎,‎Sport Plug Type‎:‎ 3.5mm Cable Length ‎(‎m‎)‎‎:‎ 1.2m Sound channel‎:‎ Mono Frequency response‎:‎ 20~20KHz Impedance‎:‎ 32ohms Microphone frequency‎:‎ 75‎-16KHz Package weight‎:‎ 0.120 kg Package size ‎(‎L x W x H‎)‎‎:‎ 12.00 x 5.00 x 16.50 cm / 4.72 x 1.97 x 6.50 inches Package Contents‎:‎ 1 x Retractable Foldable Mic Headphone