Baglaum Electret condenser Miniphone, back electret type, small in size, in general use. An acoustic-to-electric transducer or a sensor that converts sound into an electrical signal. Widely applied to telephone, mobile phone, MP3, MP4, laptop, digital camera, intercom, monitor, etc. Material:metal Package Content: 60pcs x Electret Condenser Miniphone 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.