Features. High-quality sound. The built-in microphone core and single audio cable give the microphone stereo pickup effect. Efficient and powerful. The microphone has good smoothness and high sensitivity, with long and clear pickup distance. High recording quality. The microphone has a built-in professional high-performance pickup with dual-head complementary interference pickup technology, designed for cameras and high-sensitivity condenser microphones to recording quality. This camera microphone has a wide frequency response and high definition sound resolution. Easy to use. The microphone does not require battery, phone or camera power installation. It is plugged and played. Portable. With a structure and a light weight, the microphone is easy to carry. Specifications. Material: plastic Color: black. One-way function: Yes. Microphone : 3.5mm/0.14inch. Power supply: External power supply. Frequency response: 100-16000Hz. Sensitivity: -423dB RL = 680 Vs1.5 (1khz 0dB = 1V/Pa). Output impedance: 1-2.2k. Power consumption: Max 0.5mA. Voltage: 1-10V. Maximum sound pressure: 110dB S.P.L. Sensitivity reduction: 2.0V-1.5V sensitivity change less than 3dB. Item size: 9 x 6 x 2.8cm/3.54 x 2.36 x 1.1inch(L x W x H). Weight: 71g/2.5oz. Package Contents: 1 x microphone kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.