BOYA BY-LM20 Lavalier Microphone lapel microphone omnidirectional condenser Mini USB for GoPro Hero 3 4 Hero, Hero 2, camcorder (Electronics)
Very good product, matches the description. The sound is very good. However, the male connector is too long, which forced me to reconsider the placement of the GoPro on the motorcycle helmet. Apart from this minor detail, you can go. Not disappointed