Features:
1) Colorful necklace hands-free kit
2) With PTT switch
3) High sensitive electret condenser microphone
4) With magnet under the microphone cover, the user can place the earset
on the loop of the microphone freely
5) Compatible with various kinds of mobile phones
6) Driver diameter: 13mm
7) Frequency response: 20Hz - 20kHz
8) Impedance: 32Ω
9) Sensitivity: 105±5dB
10) Max. input power: 10mW

Inner packing: polybag or customize

Outer packing: carton