Specification: microphone, 4, Bluetooth, USB, true, false, lithium_polymer, 2.5 grams, 7.5946 L x 23.7998 W x 41.783 H centimeters, 1 year manufacturer.
Microphone Signal to Noise Ratio(SNR): recording microphone
Specification: Size : 120*120*225 mm. Directivity : Omnidirectional Signal to noise ratio : Less than 50 db. Sensitivity : -58 -2db The lenght of wire : 1.5m Impedance: 2.2k Frequency : 70HZ-10KHZ Microphone head : 6*5 mm