The BOYA BY-M1DM is a dual-head electret condenser lavalier microphone designed for recording two people simultaneously. With an omnidirectional polar pattern, it captures sound from all directions, ensuring clear and natural audio. It features a frequency range of 65Hz–18kHz, a signal-to-noise ratio of 74dB SPL, and sensitivity of -30dB ±3dB. The microphone comes with a 4-meter (13ft) cable, making it suitable for interviews, podcasts, vlogs, and conferences. Its 3.5mm 4-pole gold plug ensures wide compatibility with smartphones, cameras, and laptops. Powered by an LR44 battery (included), the BY-M1DM delivers reliable performance with a lightweight design of 68g.