Features: 1. It has extremely wide frequency response, fast transient response and ultra-high sensitivity. It can collect sound in 360 degrees. 2. USB free drive plug and play. Effective pickup within 3 meters radius, high fidelity high definition sound. 3. Electrophoresis technology and pickup grade polyethylene material ensure safety and environmental protection. The joint is fine and lustrous, eliminating the current that may be generated by the joint from the source. 4. It can display the characteristics of original sound reproduction, has the characteristics of ultra-low touch noise (Handling Noise) and resistance to impact. Small size, light weight. 5. Some notebook headphones and microphone holes are separate and can be used. But most laptops' headphones share the same interface with microphones. Under such circumstances, you will need an adapter to seperate the interface. 6. Comes with a 2m USB cable to meet most field wiring requirements. Specifications: Mode l: iTalk-02/um02 Features: omnidirectional Channel: mono Shell material: zinc alloy + metal mesh cover Microphone use: notebook, desktop computer universal Sensitivity : -40±3 dB Frequency response range: 100-16000HZ Maximum sound pressure ratio: 110db Signal to noise ratio: >60db Pointing feature: omnidirectional / no pointing Picking distance: recommended 2 meters, up to 3 meters pickup radius Interface type: USB 2.0 Cable length: about 2m Size: Approx. 7*7*1.5cm/2.76*2.76*0.59in Package List: 1 * Microphone 1 * User Manual .