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| Frequency stability： | 45Hz~15kHz |
| Dynamic range： | More than 100dB |
| system distortion： | Less than 0.5% |
| Signal to noise： | More than 90dB |
| Operation range： | Open space within 100 meters |
| Operating temperature range： | -18 C ~+55 C |
| Transmitter: | |
| RF transmitter output: | 30mW |
| Transmit mode: | FM point |
| Power supply: | Two 1.5V batteries |
| Batteries cycle life: | >8 hours |
| Weight: | 290g |
| Receiver: | |
| Receiving sensitivity: | 105dB |
| Audio output impedance: | 200 Omega 10% |
| Audio output voltage: | 0~0.5V |
| Power supply: | DC12~18V 150mA |
