This GSM spy bug device uses Taiwan military technology GSM module with voice-activated automatic pull back function, can be installed in home, companies, shops and warehouse. This product compact size, voice clear, simple operation, stable performance, without install, remote control etc.
- Frequency: GSM900MHz/DCS1800MHz Or GSM850MHz/DCS1900MHz
- Power Supply: 24 hours Non-stop
- Card Compatible: GSM / SIM
- Microphone Range (Meter): 5-7(Radius), 4 levels