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Key Features
Capture audio in your next four-person vlog for YouTube or Tiktok livestream with your compatible USB-C mobile device using this BY-V4U Ultracompact 4-Person Wireless Microphone System from BOYA. The system includes four ultracompact clip-on transmitters with built-in omnidirectional microphones and a four-channel, plug-in receiver with a USB-C connector which inserts directly into your device. Attach the transmitters to your talent's lapel and record audio for social media. All of the components can communicate from up to 656.2' away via 2.4 GHz frequency.
Use the LED indicators on each unit to view your connection status. Onboard controls on each transmitter allow you to toggle noise reduction mode for clearer vocals or mute the unit entirely. The receiver runs on plug-in power from your device and has a USB-C port to charge your device while it is attached. Built-in rechargeable batteries power the transmitters for up to 6 hours at a time and USB-C charging ports or the included charging case can recharge them in 2 hours once depleted.
Features at a Glance
Key Specs
| Wireless Technology | Digital |
| Included Transmitters | 4x Clip-On with Microphone |
| Diversity | Non-Diversity |
| Max Operating Range | 656.2' / 200 m (Line of Sight) |
| Receiver Type | Plug-In (USB-C) |
| Microphone Type | Built-In (Transmitter) |
| Polar Pattern | Omnidirectional |
System
| Wireless Technology | Digital |
| Included Transmitters | 4x Clip-On with Microphone |
| Diversity | Non-Diversity |
| Max Operating Range | 656.2' / 200 m (Line of Sight) |
| Max Transmitters per Band | 4 |
| Built-In Recorder | No |
| Timecode Support | No |
| Mobile App Compatible | Yes: Android & iOS |
| Sample Rate/Resolution | 48 kHz / 16-Bit |
| Latency | 20 to 30 ms |
| Modulation | GFSK |
| SNR | >80 dB |
| THD | ≤0.1 % |
Receiver
| Receiver Type | Plug-In (USB-C) |
| Mounting Options | Plug-In (with Included Hardware) |
| Antenna | PIFA |
| Number of Audio Channels | 4 |
| Built-In Microphone | No |
| Audio I/O | No |
| Frequency Response | 20 Hz to 20 kHz |
| Network I/O | No |
| USB/Lightning Connectivity | USB-C Male (Audio) |
| USB Class-Compliant | Yes |
| RF Output Power | 10 mW |
| Power Requirements | Bus Power (USB) |
| Display & Indicators | LED |
| Operating Temperature | 32 to 122°F / 0 to 50°C |
| Storage Temperature | -4 to 131°F / -20 to 55°C |
| Dimensions | 2.5 x 0.7 x 0.4" / 62.5 x 18.3 x 10.2 mm |
| Weight | 0.3 oz / 9 g |
Transmitter
| Transmitter Type | Clip-On with Microphone |
| RF Output Power | 10 mW |
| Built-In Microphone | Yes |
| Audio I/O | No |
| Muting | Off/On Switch |
| Audio Input Level | -20 to -42 dBu |
| Auto-Level Control | Yes |
| Recorder Sample Rates | 48 kHz |
| Recorder Bit Depths | 16-Bit |
| Frequency Response | 20 Hz to 20 kHz |
| Sync Method | 2.4 GHz QPSK |
| Antenna | PIFA |
| Power Requirements | Battery |
| Battery Type | 1x Built-In Rechargeable |
| Internal Battery Capacity | 95 mAh |
| Battery Charging Time | 2 Hours |
| Approx. Battery Life | 6 Hours |
| USB/Lightning I/O | USB-C (Charging) |
| Display & Indicators | LED |
| Operating Temperature | 32 to 122°F / 0 to 50°C |
| Storage Temperature | -4 to 131°F / -20 to 55°C |
| Dimensions | 2.5 x 0.7 x 0.4" / 62.6 x 18.3 x 10.2 mm |
| Weight | 0.4 oz / 10.5 g |
Microphone
| Microphone Type | Built-In (Transmitter) |
| Sound Field | Mono |
| Polar Pattern | Omnidirectional |
| Frequency Range | 20 Hz to 20 kHz |
| SNR | 80 dB |
| Maximum SPL | 120 dB SPL |
| THD | 0.1% |
| Sensitivity | -42 dB |
Charging Case
| Recharge Time | 2 Hours |
| Battery Chemistry | Lithium-Ion |
| Capacity | 1500 mAh |
| Charging Interface | USB-C |
| DC Input Power | 5 VDC at 2 A |
| Dimensions | 5.7 x 3.2 x 1.4" / 143.6 x 80.5 x 35.5 mm |
| Weight | 5.6 oz / 160 g |