Overview The Pecan B-M1 Lavalier Clip-on Omnidirectional Condenser Microphone is designed for video use and provides clear and accurate voice reproduction. Newscaster-style design provides effective omni-directional pickup pattern. The best performance+cost value available for your complete video needs. Unit is extremely lightweight, designed for optimum portability and comfort, and delivers some of the clearest recorded sound you can find. The B-M1 is not just for cameras, it is also compatible with iPhone series smartphones, audio recorders and mobile devices. Microphone performance is much better than most built-in camera microphones: outstanding for interviews, podcasts, dictation, and much more. This microphone is a workhorse, never get caught with mushy, muffled sound again. Windscreen and wind muff are included for use in breezy conditions or while moving at speed. Includes 20-foot audio cable, LR44 700-hour battery, 1/4" Jack adapter, and Tie-clip for handy mounting. The components fit inside many standard camera cases. Also includes 1-year manufacturer warranty. Specification: Transducer type: Electret Condenser Frequency Range: 65Hz ~ 18KHz Signal / Noise: 74dB SPL Sensitivity: -30dB +/-3dB / 0dB=1V/Pa, 1kHz Output Impedance: 1000 Ohm or less Output Connection: 3.5mm (1/8") 4-pole gold plug Battery Type: LR44 Dimension: Microphone :18.00mmH x 8.30mmW x 8.30mm Audio Cable: 20.00ft (6.00m) Weight: Microphone : 2.50g Power Module: 18.00g Notes: For Smartphone: Switch off the microphone. Slide the ON/OFF up to OFF/Smartphone. The power is shut down. For DSLR, Camcorders, Audio recorders ect? Switch on the microphone. Slide the ON/OFF up to ON. What's in the box? 1 * B-M1 Microphone 1 * Lapel Clip 1 * Foam Windscreen 1 * 1/4"(6.5mm) Jack adapter 1 * User Manual (English) 1* LR44 Battery (Included)