Features: --All-metal structure, small, delicate, special surface treatment process, smooth texture and durable. --Compact, solid metal collar clip, easy to use not to hurt the clothing. --The cable is equipped with tensile, bending. --Microphone core using the latest technology, greatly enhanced reception range. --Noise control is good, offer you the feel of quiet. --Suit for Desktop, Laptop, MP3, MP4, loudspeaker and other camera recorder. Specifications: Directivity: Omni-directional Frequency Range: 20-20KHz Impedance: 480KΩ Sensitivity: -47dB±3dB Plug type : stereo φ3.5mm Color: Black Cable length: 2.4M Mic diameter: 6.0*5.0 mm Receive Range: Powerful receive <30cm Clear receive <1meter Normally receive <3meter Packaged Included: 1 x Lapel Lavalier Mic Microphone