X5 Solar charger call back gsm bug

Supplied with a solar panel. Once exposed by
ray, it can charge the built-in battery for a
longer work time.
* Dimensions : 50mm x 40mm x 15mm
* SIM Card slots – work with all GSM sim card
* Embed condense microphone.
* Microphone range: about 10 Meters (diameter)
* Receive sensitivity: -\+ 10K
* Working temp: -40~50 degree C
* Responding frequency: 1.2K~800Khz