BOYA BY-V4 4-Channel Mini Wireless Microphone

Receiver (RX): 3.5 mm 
TRS Transmitter (TX): with 4 Mics 
Color: Black

Playback while Connected to Mobile Devices: No
Power Supply: Built-in Li battery
3.5mm: Yes
Type-C (USB-C): No
Lightning: No

Size: 62.6 × 18.3 × 10.2 mm
Weight: 10.5 g
Sampling Rate: 48 kHz 16-bit
SNR (Signal to Noise Ratio): >80 dB
SPL: 120 dB
Recording Mode: Mono
Noise Cancellation: One-click
Transmission Range: 200 m
Diaphragm: Silicon Microphone
Battery Life: 6 h
Clip: 360° Rotatable
Frequency Response: 20 Hz - 20 kHz
Latency: 20 - 30 ms
Human-machine Interaction: Via physical buttons
Power Supply: Built-in Li battery