offer 138MHz wireles headset with mic (DS-RF0538)

Xianghui wireless headphones expand and enhance your enjoyment of the audio source, such as TV, VCD, CD, PC, MP3/4.
1. Frequency:84MHz
2. The frequency sent by the transmitter: 138MHz
3. Frequenz: 20Hz-15KHz
4. Effective transmitting range: 20 meters
5. With FM radio function