Boya BY-WM3T2-U2 Mini 2.4GHz Wireless Microphone

The Boya BY-WM3T2-U2 is a tiny wireless microphone system perfect for capturing clear audio on the go that includes a transmitter that clips to your shirt and a receiver that plugs into your camera or phone. Both are very lightweight, so they won't weigh you down. The microphone picks up sound from all around it  and transmits it wirelessly using a 2.4GHz signal. It can work for up to 50 meters away in open spaces and both the transmitter and receiver can run for about 10 hours on a single charge.