The Boya BY-V4U is a four-channel mini wireless microphone system designed for recording audio from up to four people simultaneously. It uses a 2.4 GHz frequency to maintain a stable connection over distances up to 200 meters, making it a practical choice for group interviews or content creation where subjects are spread apart. The system captures sound with an omnidirectional polar pattern and a frequency response of 20 Hz to 20 kHz, ensuring a natural audio profile with a 48 kHz sampling rate. Each of the four transmitters is exceptionally light, weighing only 10.5 grams, and is housed in a compact ABS/PC shell. To keep recordings clean, the system features a toggleable dual noise cancellation mode that helps filter out background distractions. The USB-C receiver plugs directly into your device and includes a pass-through charging port, so you can keep your phone or tablet powered while recording. Everything is managed through a charging case with a 1500 mAh battery, providing up to 6 hours of operating time after a 2-hour charge. LED indicators on the units show the connection status, and a dedicated mute button allows for quick control during a shoot. Along with the transmitters and receiver, the package includes a charging cable and adapters to extend compatibility to cameras and tablets.