Features: Clip-On Mic for Smartphones, DSLR, Camcorders, Audio recorders, PC etc. Superb sound for presentations and video recording. Omni-directional condenser microphone. High-quality condenser is ideal for video use. Low handling noise. Includes lapel clip, foam windscreen, 3.5mm to 6.3mm adapter. Using the microphone - For Smartphone Switch off the microphone. Slide the ON/OFF up to OFF/Smartphone. The power is shut down. - For DSLR, Camcorders, Audio recorders, PC ect Switch on the microphone. Slide the ON/OFF up to ON. Specifications: Transducer: Electret Condenser Polar pattern: Omni-directional Frequency Range: 65Hz ~ 18KHz. Signal/Noise: 74dB SPL. Sensitivity: -30dB +/-3dB / 0dB=1V/Pa, 1kHz. Output Impedance: 1000 Ohm or less Connector: 3.5mm (1/8”) 4-pole gold plug. Battery Type: LR44 Cable length: Approx. 5.7m / 18.7ft Package size: 13.5 * 10 * 3.5cm / 5.3 * 3.9 * 1.4in Package weight: 108g / 3.8oz Package List: 1 * BY-M1 Microphone 1 * Lapel Clip 1 * Foam Windscreen 1 * Adapter 1 * User Manual (English)