The BOYA BY-WM4 is a 2.4 GHz wireless microphone system, specially designed for iPhone, Ipad and most of Android devices, tablet, but also can work with DSLR camera, Camcorder, PC etc. It consists of a bodypack transmitter, a camera-mountable wireless receiver, an omnidirectional lavalier microphone, a camera shoe mount, 3.5mm(1/8") TRS Connector, 3.5mm(1/8") TRRS Connector, a carrying case, foam windscreen and microphone clip. The receiver is built with mic and headphone output jacks. The bodypack transmitter includes a MIC jack and LINE IN jack. The operation range is 15m (49ft) can use under many situations.- Compatible with most of Audio/Video equipments, such as Smartphone, tablet, DSLR, small recorder, Audio Recorder, PC etc.- Compact and lightweight bodypack transmitter and receiver- Electret condenser, omnidirectional lavalier microphone Specially designed for Smartphone, tablet. Also work for DSLR, small recorder, Audio Recorder, PC, etc. 2.4 GHz digital transmission