1. Frequency response: 50Hz-20KHz
2. Impedance: 2.2K ohm
3. Directionality: Omnidirectional
4. Plug: 3.5mm gold plated straight
5. Applicable: mobile phones/laptops/desktop computers/repeaters/recording pens, etc. to improve the sound quality of the original built-in microphone
6. Microphone size: 6.0x2.7mm
