Using a large-scale integrated circuit, a frequency conversion technology, with a level of antenna amplification circuit, receiving high sensitivity, direct use of the headset line to do the receiving antenna, no additional external antenna, the use of more convenient, can receive 110-140MHZ amplitude modulation signal , Including 118-136MHZ band of air amplitude modulation signal.

The machine uses two batteries , the size of 8X5.5X1.5cm, with buckle