BOYA BY-M1 Pro is a Clip-on single head Mic for Smartphones, DSLRs, camcorders, audio recorders, PC etc. High-quality electret condenser microphone, perfect for video use, vlogging audio recording. Support function of playing back headphone monitoring in smartphone mode. With -10dB sound attenuation, low handling noise, high quality recording sound. Specially designed for interviews, conferences, presentations, podcasts, webcasts and more situation needed to be recorded. Brand: BOYA Model: BY-M1 Pro Transducer: Electret Condenser Polar Pattern: Omni-directional Frequency Range: 65Hz~18KHz Signal / Noise: 78dB SPL Sensitivity: -30dB +/- 3dB / 0dB=1V/Pa, 1kHz Output Impedance: 1000 Ohm or less Connector: 3.5mm (1/8inch) 4-pole gold plug Pad Switch: 0/-10dB Battery type: LR44 included (compatible with LR44, 357, and SR44) Cable Length: 6m / 13ft Item Weight: 58g / 2.4oz Colour: black Material: plastic Size: cable length: 6M Package Contents: 1 * BY-M1 Pro Lavalier Microphone 1 * Noise Cancelling Wind Muff 1 * Clothing Clips 1 * 3.5mm to 6.35mm Audio Connector 1 * English Manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.