Main Features‎:‎ ● In‎-ear design to isolated from outside noise‎.‎● Comfortable earbuds‎,‎ wear it in a long time‎.‎● Built‎-in microphone‎,‎ handsfree to talk‎.‎● 3.5mm plug‎,‎ compatible with most devices‎.‎ Function‎:‎ Answering Phone‎,‎HiFi‎,‎Microphone Connectivity ‎:‎ Wired Application‎:‎ Computer‎,‎For iPod‎,‎Mobile phone‎,‎Portable Media Player Plug Type‎:‎ 3.5mm Frequency response‎:‎ 20‎-20000Hz Impedance‎:‎ 8ohms Microphone frequency‎:‎ 100 ‎- 10KHz Microphone impedance ‎:‎ 2.0K ohms Package weight‎:‎ 0.065 kg Package size ‎(‎L x W x H‎)‎‎:‎ 8.00 x 2.20 x 12.50 cm / 3.15 x 0.87 x 4.92 inches Package Contents‎:‎ 1 x Earphones‎,‎ 4 x Earbud