Power Pack: provides power for the microphone for use with cameras and other devices requiring a powered mic . Camera Setting: turns the power on to the microphone. For use with cameras and other devices requiring a powered mic Smartphone Setting: switch to smartphone mode to allow the BY-M1 PRO works on mobile devices like smartphones, tablets and PC etc that with a 3 . 5mm input jack 3.5mm Connector: connects the microphone to the smartphone, camera, camcorder, or other recording device. 0 / -10dB Setting: switch to 0 /-10 dB according to the recording environment. with -10dB pad switch, it effectively reduce unwanted plosive when the subject sound is very loud and close to the microphone Headphone Monitoring: in smartphone mode, playback headphone monitoring is allowed Specifications Brand: Boya Model : BY-M1 Pro Color: Black  Microphone Type: Lavalier (clip-on) condenser microphone Polar Pattern: Omnidirectional (captures sound from all directions) Connectivity: 3.5mm TRRS jack (compatible with smartphones, DSLR, PC, camcorders) Cable Length: Approx. 6 meters (20 ft) for flexible recording setup Frequency Response: ~65Hz – 18kHz (clear voice capture range) Sensitivity: High-sensitivity condenser capsule for detailed audio Power Source: LR44 button cell battery (for camera mode) Switch Mode: Smartphone / Camera switch for wide compatibility Output Impedance: ~1000 Ohms Signal-to-Noise Ratio: ~74 dB (low noise recording) Gain Control: Built-in gain switch for better audio adjustment -10dB Pad Switch: Reduces distortion in loud environments Plug & Play: Easy setup without complex configuration