This listening bug has a very long standby time, which is useful, when you have no electricity power supply. GSM listening devices microphone is very sensitive, so the sound is super clear. The spy bug is made in EU, so the quality is fine. Further more it also can work in America and all over the world.
Audio surveillance is now very easy. You just need to put a SIM card inside the item and make a spy call from your phone. You now can hear what people speak in the bugging devices environment. There is also a call back function, which lets you know if somebody is in the room.
- Standby time: up to 60 days
- Continuous listening: 25 hours
- Call back function
- Supported frequencies: 850/900/1800/1900 MHz
- In USA it will only work with T-mobile Network until the end of 2022
- Dimensions: 52x32x16mm
- Made in EU