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Boya BY-WM4 Pro K1 Universal Lavalier Wireless Microphone System

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  • 12 Month Warranty*
  • Click & Collect (Sydney)
  • Same Day Dispatch*
  • Friendly & Expert Advice
  • 100% Australian Stock
  • 7 Day Exchanges*

Designed for videographers, film makers and video hobbyists, the Boya BY-WM4 Pro-K1 Wireless Microphone System is the latest version of the Boya's range of 2.4GHz wireless lavalier microphones. It features dual-channels for capturing audio with dual subjects to a smartphone, tablet, DSLR camera, mirrorless cameras, consumer camcorders, computers, PCs, laptops and more.

The BOYA BY-WM4 Pro-K1 Wireless Microphone System is a compact and extraordinarily easy-to-use wireless microphone system for recording crisp and clear speech, and interviews. The omni-directional lavalier mic included is suitable for performers who which to exhibit freedom of movement in their visual recordings. Additionally, the system offers up to 60m (197ft) line-of-sight operation range. BY-WM4 Pro-K1 consists of one compact body-pack transmitter (TX4 Pro), a portable receiver(RX4 Pro), a lavalier/lapel microphone, an omni-directional lavalier microphone, a 3.5mm TRRS audio cable and a 3.5mm TRS audio cable, which provides immediate out-of-the-box operation for anyone, making it ideal for video, podcast, and mobile journalism applications. The receiver is built with 3.5mm mic and 3.5mm headphone output jacks. The body pack transmitter includes a MIC jack and LINE IN jack.

  • For mobile smartphone film-makers and videographers, Journalists, Vloggers, YouTubers, Podcasters and more
  • Compatible with most of Audio/Video equipment, including the Apple iPhone, Android devices, tablets, DSLR cameras, small recorders, Audio Recorder, PC etc
  • Dual-channel receiver allows working two transmitters at the same time
  • Compact and lightweight body pack transmitter and receiver
  • Electret condenser, omni-directional lavalier microphone
  • With simple gain buttons and a power/pair button, the system is easy to use


  • Dual-Channel Wireless Receiver
  • Digital 2.4 GHz Frequency Brand
  • Super-clear recording sound
  • Compatible with smartphones, DSLR cameras consumer camcorders,PCs etc.
  • Lightweight and compact for easy carrying
  • Omnidirectional lavalier microphone
  • Hard case included
  • Standard camera shoe mount and clip included
  • Up to 60m(197ft)operation range(without obstacle)
  • Power supplied by two AAA batteries for transmitter and receiver


 RF Modulation:  GFSK (Gauss frequency Shift Keying)
 Frequency band:   2.4GHz (2405-2478MHz)
 Frequency response:  35Hz-14KHzñ3dB
 Signal/Noise:  84dB or more
 Distortion:  0.05% or less (32?,1 KHz,65mW output)
 RF output level:  3mW
 Earphone output level:  32?,65mW
 Reception sensitivity:  -90dB +/- 3dB / 0dB=1V/Pa, 1kHz
 Audio input connector:  3.5mm mini jack
 Operation range:    60m (197ft) (without obstacle)
 Power requirements:   3V DC (Two AAA size batteries)
 Consumption power:  Transmitter: 3V/70mA
 Dimensions:  Receiver: 45x70x35mm (1.8*2.8*1.4 inches)
 Transmitter: 45x70x35mm (1.8*2.8*1.4 inches)
 Weight:  Receiver: 47g (1.7 oz)
 Transmitter: 47g (1.7 oz)

What's Included

1x BY-WM4 Pro Transmitter (TX4 Pro)
1x BY-WM4 Pro Receiver (RX4 Pro)
1x Boya Lavalier Omni-Directional Microphone
1x 3.5mm TRRS Audio Cable for Smartphones, Tablets, Laptops
1x 3.5mm TRS Audio Cable for DSLR Cameras, Camcorders, Mirrorless Cameras, Recording Devices

All deliveries within Australia are facilitated by Australia Post, Startrack or other courier services depending on the method you select during checkout and the dimensions/weight of the package. Generally, we dispatch within 24 hours of receiving your order unless otherwise stated. We have a quick turnaround time on postage and handling. Tracking numbers are issued via our automated e-mail system, however, if you do not receive your tracking number, please message our helpful staff and we'll attempt to provide as much information regarding your order as possible.

Please allow between 2-7 business days for standard deliveries to metro* areas and capital cities. For suburbs outside metro areas please allow an additional 2-5 business days for delivery. *Metro capital cities include: Sydney, Canberra, Wollongong, Gold Coast, Brisbane, Melbourne, Adelaide, Perth, Hobart or Darwin.

All products are covered by an Australian 12 month warranty. This can be either a manufacturer's warranty or a Hypop warranty depending on the product's origin. The warranty covers manufacturers faults, defects, parts and labour. This means that any fault that is deemed to be due to manufacturing will be covered by the warranty for any parts and labour required to fix it. In some cases when the cost of repair outweighs that of a replacement, a suitable replacement product may be offered.
These products are not covered by our 12 month warranty as these products are susceptible to regular wear-and-tear and can get damaged for a variety of reasons not deemed as a manufacturer's fault. If these products are faulty or DOA please notify us within 7 days for a replacement. PLEASE NOTE: *This excludes Light Bulbs, Cotton Muslin Backdrops, Paper Backdrop Rolls, Batteries, Consumable Products and Travel Carry Bags included with our kits. DEMO STOCK: All demo stock items are sold 'as-is' and come with a standard 12 month warranty. Stock will either be repaired, substituted with a similar demo item (subject to availability), you may opt for an exchange or a store credit may be offered. Please contact us for further detail.

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