Specifications: Brand: BOYA Model: BY-M1 Pro Color: Black 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 (1/8") 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 Package Size: 12.2 * 8.9 * 3.6cm / 4.8 * 3.5 * 1.4in Package Weight: 59g / 2.08oz Package List: 1 * BY-M1 Pro Lavalier Microphone 1 * Noise Cancelling Wind Muff 1 * Clothing Clips 1 * 3.5mm to 6.35mm Audio Connector 1 * LR44 Battery 1 * Carry Pouch 1 * User Manual Note: The camera and smart phone showed in the picture are not included.High-quality electret condenser microphone, ideal for video use, vlogging audio recording.BOYA BY-M1 Pro is a Clip-on single head Mic for Smartphones, DSLRs, camcorders, audio recorders, PC etc.With -10dB sound attenuation, low handling noise, high quality recording sound.Support function of playing back headphone monitoring in smartphone mode.Specially designed for interviews, conferences, presentations, podcasts, webcasts and more situation needed to be recorded.