BOYA WARRANTY? : We provide 24-month warranty and lifetime customer service. If you have any questions about BY-M1S phone microphone, please feel free to contact BOYA Support. WIDELY COMPATIBILITY?: The lapel microphone provides 2 mode, one-click switching to smartphone or camera mode to start recording. Widely compatible with iPhone, iPad (ios devices need a 3.5mm to lightning adapter), Android devices, DSLR Cameras, Camcorders, Audio Recorders, Tablets, Laptops. Professional Microphone?:  The lapel microphone provides 360 degrees of sound pickup, 50 Hz ~ 20KHz, Signal/Noise: >78 dB , giving you a clear and intelligible voice capture.Designed for use in a wide range of applications including Live stream,Interview,filmmaking, broadcast, streaming and video calls. Manual Noise Reduction?: The microphone is equipped with a 0dB/- 10dB gain switch, which can effectively reduce environmental noise.When switched to -10dB, the audio output gain will be reduced by 10dB to ensure that the audio will not be distorted by high-volume sound input, or that the subject facing the microphone will not be heard clearly due to ambient noise. Upgraded BY-M1 Pro?: BY-M1 Pro II is an upgraded version of the previous generation. Highlights: 1. No battery - plug and play, direct recording without additional power supply. 2.The Frequency Response is increased to 50 Hz~20KHz, which can capture more sound details and restore the original high-definition audio.