Samson Go Mic Mobile Lavalier is a wireless system for Smartphones, tablets, cameras and PCs. Dual Receiver. Available with handheld microphone, Lavalier or shotgun microphone transmitter. 30m range. 6 hours of battery life. Lithium Battery. Frequency from 2.404 to 2.476 Ghz. Audio frequency response: 10Hz to 22Khz. Two independent receiving channels and the possibility of using 3 systems simultaneously. Included accessories: lightning cable for Iphone or Ipad, USB charging cable for Android, 3.5mm audio cable and mounting adapter. Compatible with Mac Os, IOs, Windows, Android and Linux. Ideal for mobile video recording, journalists, productions for Youtube, video blogging and live streaming.