an-do-er uni-directional head-mounted headworn headset ear-hook microphone mic flexible wired boom for voice amplifier amp loudspeaker an-do-er it is designed for use on stage, houses of worship, presenters, lecturers and other situations requiring minimum microphone with hand-free operation.<br /> <br /> <b>features:</b><br /> metal flexible boom to allow you to adjust the direction and angle according to your need.<br /> uni-directional pickup design can effectively reduce the noise of the surrounding environment.<br /> wireframe headset fits securely for active speakers and vocal performers<br /> works with voice amplifier.<br /> headset style microphone with 3.5mm male connection.<br /> <br /> <b>specifications:</b><br /> polar pattern: uni-directional<br /> sensitivity:-53db ± 1db<br /> frequency response: 20-20khz<br /> output resistance: ≤680ω<br /> working power: dc 1.0v-10v<br /> snr: >28db<br /> cable length: approx.95cm / 37.4in<br /> plug type: 3.5mm<br /> item weight: approx.19g / 0.7oz<br /> package weight: approx.20g / 0.7oz<br /> package size: approx.20 * 17 * 2cm / 7.9 * 6.7 * 0.8in<br /> <br /> <b>package list:</b><br /> 1 * microphone