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

Package Type:
All goods will pack into cartons and wrapped full of waterproof tape before shipment .

We can accept customized package to meet different requirements :
1.Every item will separately pack into plastic bag ,component, module can be packed in anti static bag .
2.Some fragile products such as the display screen can be packed in bubble bag .
3.Some large machines can be packed in wooden cases.
4.We can label JH code or client's code on package so that customers can check easily after receive goods.