Features: The AD-M1 is universal Lavalier Microphone, which can be used with DSLR cameras, smartphones, camcorders, audio recorders, PCs and other audio/video recording devices. High quality condenser mic is ideal for accurate voice recording. Omni directional pick-up pattern for flexible, easy use. Low handling noise. Includes lapel clip, LR44 battery, foam windscreen, 1/4" adapter. Specifications: Brand: Andoer Model: AD-M1 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 Microphone Size: 5 * 1.8cm / 1.97 * 0.71inch Microphone Weight: 2.5g / 0.1oz Power Module: 18g / 0.6oz Package Size: 12.1 * 9.1 * 4cm / 4.8 * 3.6 * 1.6inch Package Weight: 146g / 5.2oz Package List: 1 * Andoer AD-M1 Lapel Microphone 1 * Lapel Clip 1 * LR44 Battery 1 * Foam Windscreen 1 * 1/4" Adapter 1 * User Manual