Vidpro XM-G Pro Lavalier Microphone for GoPro, Action Cameras & Smartphones Designed for use with GoPro, action cameras and smartphones Transducer: Electret Condenser Polar Pattern: Omni-directional Frequency Range: 35Hz ~ 18KHz Connector: USB adapter and / or 3.5mm (1/8&quot;) 3-pole mini-plug