1. This microphone uses a standard 3.5mm plug, which can be directly plugged into the MD interface and does not require an external battery. The frequency response range is 100-15KHz, and the sound pressure sensitivity is 38 +/- 3db, which has good directivity. 2. External stereo microphone. After connecting the iFP-890, it can be folded at 90 degrees. 3. Mini stereo dual-channel digital microphone, unique design, stylish and compact, clear recording, 4. The high-quality microphone can record on digital media, and the 3.5mm plug can achieve maximum conductivity and minimum noise 5. Connect directly to the mobile phone, provide faster and easier recording session settings, plug in the power operation without battery, and ensure the reliability in almost all conditions Small and light weight, the microphone terminal is directly inserted, no battery DAT, MD high performance suitable for music radio. Direction characteristics: single directivityx2. Colour: black Material: ABS+metal Size: 58x16x57mm Package Contents: 1 * 3.5mm Microphone Only the above package content, other products are not included. Note: Light shooting 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.