Raspberry Pi 3B Driverless USB Microphone

1. The sensitivity: - 47 db + 4 db
2. Lower sensitivity: - 3 db at 1.5 V
3. Working voltage: 4.5 V
4. The frequency response: 100 to 16 KHZ
5. SNR: wining - 67 db
6. Line length: 0.7 to 0.9 M                                                                      
7. High sensitivity,with an effective distance of over 2 meters
8. No other devices are required when connecting and using recording
9. It can be used with any computer with a USB port (including Apple),XP system or above without driver,plug and play