# Lavalier Microphone BOYA BY-WM4

**URL:** https://aio.lv/en/product--boya-by-wm4-pro-k3--3491400
**Data updated:** 2025-12-29 10:57 (EET)
**Category:** Microphones
**Manufacturer:** Boya
**Manufacturer code:** BY-WM4 Pro-K3
**EAN:** 6971008025699
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 21.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--boya-by-wm4-pro-k3--3491400

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.89 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The BOYA BY-WM4 is a high-quality lavalier microphone featuring a condenser transducer for clear audio capture. It operates wirelessly with a frequency range of 2405 - 2478 MHz. The system includes a rack mount receiver and a bodypack transmitter, ensuring flexibility and ease of use. With a maximum sound pressure level of 76 dB and low total harmonic distortion of 0.1%, it delivers excellent sound quality. The battery life lasts up to 3 hours, powered by AA batteries, making it ideal for interviews, presentations, and video production.

## Long description

The BOYA BY-WM4 lavalier microphone kit is a wireless condenser system designed for clear audio capture in interviews, presentations, and video production. The kit includes an omnidirectional lavalier microphone, a bodypack transmitter, a receiver, a windscreen, and a hard carrying case. It operates in the 2405–2478 MHz band, offers real-time monitoring and is compatible with smartphones, tablets, DSLR cameras, camcorders, audio recorders and PCs.
Advantages
The system provides high sound sensitivity and low total harmonic distortion (0.1%), enabling accurate voice reproduction. A maximum sound pressure level of 76 dB and a condenser transducer ensure clear capture of spoken word. The kit’s universal connections and included accessories make it convenient for on-the-go recording, while the hard carrying case protects components during transport. Battery-powered operation (AA batteries) offers up to approximately 3 hours of runtime, allowing use in field recordings without direct power.
Suitable for
 Interview recording for journalism and reporting
 Presentations and lectures
 Vlogging and on-camera voice capture with DSLR or camcorder
 Mobile content creation with smartphones and tablets
 Audio recording with portable recorders and PCs
Key specifications
 Model: BOYA BY-WM4 (MPN: BY-WM4 Pro-K3)
 Transducer: Condenser lavalier (omnidirectional)
 Operating frequency: 2405–2478 MHz
 Maximum sound pressure level: 76 dB
 Total harmonic distortion: 0.1%
 Power: AA batteries, up to ~3 hours battery life
 Includes: Lavalier mic, transmitter, receiver, windscreen, hard carrying case
 Compatibility: Smartphone, tablet, DSLR, camcorder, audio recorder, PC
 EAN: 6971008025699
How to use
Attach the lavalier microphone to the speaker’s clothing using the clip, position the microphone 15–20 cm from the mouth for balanced capture, and fit the windscreen if recording outdoors. Insert AA batteries into the transmitter and receiver, power both units on, and ensure they are set to the same channel within the 2405–2478 MHz range. Connect the receiver output to your recording device (smartphone, camera, recorder or PC) using the appropriate cable or adapter, and enable real-time monitoring to check levels. Perform a quick sound check and adjust placement or input gain on your device as needed.
Usage recommendations
For best results, avoid placing the microphone directly against fabric that can rub or create noise; use the supplied windscreen in windy conditions and verify battery charge before sessions. Keep the transmitter and receiver within recommended line-of-sight distances and minimize interference by moving away from strong Wi‑Fi or other 2.4 GHz sources if audio dropouts occur.

## Specifications

| Feature | Value |
|---|---|
| Antenna type | Fixed |
| Wireless range | 15 m |
| Microphone connectivity | RF wireless |
| Transmitter dimensions (WxDxH) | 60 x 86 x 28 |
| Transmitter weight | 136 g |
| Receiver type | Rack mount receiver |
| Transmitter type | Bodypack transmitter |
| Microphone type | Lavalier microphone |
| 3.5 mm (1/8-inch) in | Yes |
| Radio Frequency (RF) range | 2405 - 2478 |
| Microphone frequency response | 35 - 14000 |
| Camera adapter included | Yes |
| Microphone clip | Yes |
| Microphone transducer principle | Condenser microphone |

### Weight & dimensions

| Feature | Value |
|---|---|
| Receiver dimensions (WxDxH) | 60 x 86 x 41 |
| Receiver weight | 152 g |

### Power

| Feature | Value |
|---|---|
| Battery type | AA |
| Number of batteries supported | 2 |
| Battery life (max) | 3 h |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | Audio (3.5mm) |
| Batteries included | No |

### Other features

| Feature | Value |
|---|---|
| Sound pressure level (max) | 76 dB |

### Receiver

| Feature | Value |
|---|---|
| Signal-to-Noise Ratio (SNR) | -85 dB |

### Amplifier

| Feature | Value |
|---|---|
| Total Harmonic Distortion (THD) | 0.1 % |

## FAQ

### How much does the Lavalier Microphone BOYA BY-WM4 cost, and is it available for purchase?

The price is 25.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 08.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Boya products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Boya service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/3491400/57095123_large.webp