Description:
BOYA BY-M1 is an Omni directional lavalier microphone, designed for Smartphones, DSLR, Camcorders, Audio recorders PC etc, it is perfect for video use.
With Omni pickup pattern, for full 360° coverage, it absolutely gives you the possibility to capture anything in your sight.
Moreover, the integrated 6-meter (20") cable with 3.5mm 4-pole gold plug is just a second thing to be connected to your smartphones and most of your cameras.
100% a good choice to be picked.
Super sound for presentations and video audio recorders. 

Note:
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 etc:- Switch on the microphone. Slide the ON/OFF up to ON. 

Specification:
Transducer type: 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 
Output Connection: 3.5mm (1/8") 4-pole gold plug 
Battery Type: LR44 (Included) 
Dimension Microphone :18.00mmH x 8.30mmW x 8.30mm 
Audio Cable: 20.00ft (6.00m) 
Weight Microphone : 2.50g 
Power Module: 18.00g 

Package Includes:

• 1* Boya Omnidirectional Lavalier Condenser Microphone-20ft Audio Cable-
• 1* Lapel Clip
• 1* Foam windscreen
• 1* 1/4" adapter
• 1* LR44 battery
• 1* English User's Manual