The Boya 2.4 GHz Tie Pin Microphone BY-WM3D is a compact wireless microphone set for use with iPhone, iPad, iPod, DSLR cameras, camcorders and audio recorders. The Boya BY-WM3D uses the 2.4GHz band. Both the transmitter and the receiver have a compact housing which makes the Boya BY-WM3D suitable for making instructional videos, vlogs and interviews, among other things. The unit is supplied in a wireless charging case which, in addition to charging, is also used to connect the transmitter and receiver. The supplied adapters and windscreen can also be stored in this charging case. The unit weighs only 129 grams, with the transmitter and receiver weighing only 10.5 and 9.5 grams respectively. Both the transmitter and the receiver are made of high quality plastic.