Designed to connect to modern smartphones, tablets, and computers with USB Type-C. A built-in microphone allows you to make calls, and three in-line buttons allow you to answer, end or reject calls, adjust volume or to control your music. The cable is 1.2m in length, and small, medium, and large ear tip pairs are included making them suitable for all ages. Features: - Inline microphone - Volume control and play/pause button - built-in DAC chipset Note: The microphone and volume control is not suitable on all devices. Refer to the manufacturers website or user manual of your device prior to use to see if these functions can be supported. Impedence rating : 16.0Ohm Continuous Power : 5.0mW Cable length : 1.2m Weight : 17.0g Style of Headphone : In-Ear Audio Channels : Stereo Driver Diameter : 10.0mm Length of Headphone Lead : 1.2m Input Connection : USB Audio Data Frequency Range : 20.0Hz, 20.0kHz Sensitivity : 95.0dB Volume Control : true Sensitivity : -42.000000dB Sensitivity Tolerance : +-3dBdB