The BOYA BY-WM4 Pro comes with two kits, one is the BY-WM4 Pro K1, the other is the BY-WM4 Pro K2.The BY-WM4 Pro K1 contains one transmitter and one dual channel receiver, while the BY-WM4 Pro K2 includes two transmitters and a single dual channel receiver.Designed with dual channel, the receiver allows users to receive two sound sources simultaneously within 60 meters – perfect for dialogs, recording interviews, two person vlogs, and much more.

Boya BY-WM4 Pro Wireless Microphone

Another groundbreaking feature is that the transmitter can be connected with a line-level device via its line input jack, and deliver the mixed audio to the receiver that replaces part of the post-production after recording.

The BY-WM4 Pro receiver features a 3.5mm TRS output on receiver for plugging into smartphones, DSLR, consumer camcorders, and PCs with a 3.5mm TRS or TRRS port. And it also features a headphone jack for user’s monitoring with zero latency.

Another key feature of the BY-WM4 Pro is both the transmitter and the receiver come with the unique detachable and 360 degree rotatable clip to allow users to adjust them according to the scenarios. And the clip also can be replaced by the only one cold shoe mount adapter included.

Last but not least, both the BY-WM4 Pro transmitter and the receiver are powered by two AAA batteries for hours recording.And the BY-WM4 Pro and all of its accessories can be stored by the provided zipper bag.