The Boya BY-WM4 PRO-K2 is a compact entry-level wireless system with two lavalier microphones that offers an easy-to-use, cost-effective, and all-inclusive solution for recording two subjects to your camera, camcorder, or mobile device. The system delivers improved sound quality over the built-in mics on cameras and mobile devices, to supply clear, intelligible speech for interviewers, journalists, YouTube/Instagram creators, TikTok personalities, vloggers, and more.

The package includes two omnidirectional lavalier mics and two bodypack transmitters with belt clips that allow your subjects to move around hands-free in front of the camera for interviews, demonstrations, presentations, and performances. The compact, dual-channel receiver offers a 200' line-of-sight maximum operating range and includes an attachment clip and a camera shoe mount for flexible mounting options.

Connecting cables for both your camera and smartphone are included, while the 3.5mm jack on the receiver lets you plug in headphones for monitoring while you're working on set. The transmitters and receiver are both powered by two AAA batteries for up to 11.5 hours and arrive prepaired at the factory—just power up, plug the receiver into your camera or phone, and you're ready to go.

For 2-Person Videos, Interviews, YouTube    2 x Omni Lavalier Mic    2 x Bodypack Transmitter    Compact Dual-Channel Receiver    Easy to Use, Plug-and-Play Operation    Adjustable Gain, Headphone Monitoring    3.5mm Cables for Camera & Mobile Device    Runs up to 11.5 Hours on AAA Batteries    8 Systems at Once Max, Up to 200' Range

• The clip-on lavalier microphones feature omnidirectional pickup patterns that help to deliver consistent audio levels even when the subject turns away form the mic.
• The mics plug into the lightweight bodypack transmitters, which run on two AAA batteries.
• An LED indicator on the unit shows power and low-battery level.
• Simply power On the receiver and transmitter to access reliable, two channel wireless audio functionality in an instant.

• The compact receiver features a removable attachment clip that comes off to accommodate the included shoe mount for placement on your camera. 
• The receiver's input level can be adjusted to accommodate speakers at different volume levels.
• A 3.5mm TRS cable for connection to a camera or camcorder is included. A 3.5mm TRRS cable for connection to a smartphone or tablet is also included.
• The receiver features a 3.5mm headphone jack for monitoring.
• The RX4 Pro is a dual-channel receiver, so it can simultaneously handle both TX4 Pro wireless transmitters and output them to your camera or mobile device for recording.
• Up to 8 systems can operate simultaneously in the same location, but each system should be separated by at least 16.5' to avoid interference.
• Additional receiver options that mount and plug in directly to your smartphone's digital input are also available including the BY-WM4 PRO RXD for Lightning and BY-WM4 PRO RXU for USB Type-C models.

Related Questions and Answers

Q: 1. Is it possible to add a third mic to this system?

A: No. The BOYA BY-WM4 PRO-K2 Two-Person Digital Camera-Mount Wireless Omni Lavalier Microphone System (2.4 GHz) is not able to add a third mic. The receiver accommodates 2 channels only.

Q: 2. Can this be used through a digital audio interface into mu computer?

A: Yes. It would go into the XLR input.

Q: 3. All I get is a hiss and no recording with my canon 600D. Why does it not work with DSLRs like it says?

A: Please check the battery in the microphone, that it is inserted correctly and the microphone is powered on. If this does not remedy the issue please contact our Customer Service team directly: Customer Service Team 800.221.5743 cs@bhphotovideo.com

Q: 4. What is the length of the cable?

A: The cable length is 2m (6.6')

Q: 5. do BOYA BY-WM4 PRO-K2 have latency 1ms or more?

A: The manufacturer has not provided an actual specification with a number for the actual latency of the BOYA BY-WM4 PRO-K2 Two-Person Digital Camera-Mount Wireless Omni Lavalier Microphone System. The only information provided mentions that the system offers low latency audio transmission without video sync issues.

Q: 6. When I plug this mic into my Mac, input works fine but output goes to "headphones" and so I cannot hear anything. How to get the sound to go to the Mac speakers?

A: When headphones are connected, speakers are automatically disconnected. This is the way it is supposed to be and cannot be used with both headphones and speakers simultaneously. Sorry.

Q: 7. Can I plug this into a PC if I am using the web cam?

A: Yes, the BOYA BY-WM4 PRO-K2 can be connected to a PC to use as an external microphone to for audio to accompany video or for audio-only applications. You may want to connect the receiver to the computer using a USB audio interface like the Audio-Technica Consumer ATR2x-USB 3.5mm to USB 2.0 Type-C Audio Adapter (B&H # AUATR2XUSB).

Q: 8. Can you get an adapter for USB-C to lightning?

A: If you have a lightning connector on your iPad, it would be more ideal to use the version that comes with a lightning connector; BH #BOBYWM4PROK4. But you could also use a USB-C to Lightning adapter with the USB-C version, like this one. BH #APMUQX3AMA

Q: 9. this system works for the nikon z6 and nikon z50

A: Yes, the Boya BY-WM4 PRO K-2 wireless lavalier microphone system is compatible for use with both the Nikon Z6 and Z50 cameras.

Q: 10. Can multiple units be active connected simultaneously to provide coverage for hybrid meetings held in a conference room?

A: The BOYA BY-BMW700 Wireless Conference Microphone System (2.4 GHz) BH #BOBYBMW700 does not offer a multiple unit, simultaneous use feature.