The boya by-dm100 is specially designed for products with a usb-c connection. it is a professional condensater stereo-microphone, suitable for both indoor and outdoor use. the boya by-dm100 works without batteries, so you never have to worry about them being empty. in addition, it comes in a handy case, so you can take it with you wherever you go. Application boya by-dm100 The by-dm100 is ideal for use in vlogs, interviews and webinars. plug and play, you connect the by-dm100 and as soon as you start a (film) recording, the microphone starts to record immediately.  If you have an iphone or ipad with lightning connection, you can purchase the by-dm200. these can be found under the heading "optional accessories".