The Boya WM4 Pro is an affordable transmitter set for recording audio during presentations, interviews, and conversations. There are two versions of the WM4 Pro: the K1 and K2. You're currently viewing the K2, which comes with two transmitters and lavalier microphones. The K1 comes with a single transmitter and lavalier microphone. The WM4 Pro's transmitter and receiver are very compact and connect to each other on the 2.4 GHz frequency. You can easily connect the receiver to your smartphone, (DSLR) camera, PC, laptop, or MacBook. Both a 3.5 mm TRS and TRRS cable are included. For devices without a 3.5 mm input, a Lightning adapter and a USB-C adapter are available. These can be found in the optional accessories.

• Differences with the WM4 Pro
• The WM4 Pro is the successor to the WM4 and features a higher signal-to-noise ratio, so you hear less background noise. The WM4 Pro is also more compact than the WM4.
• Application WM4 Pro
• If you're looking for a basic transmitter set for recording one or two voices, the WM4 Pro K1 and K2 are a good choice. You can optionally adjust the volume with the + and – buttons. No further configuration is required, and you can get started right away. The included windshield reduces wind noise. The clip allows you to attach the microphone capsule to clothing. The range between the transmitter(s) and receiver is up to 60 meters.