Features:
Forward each phone calls to your appointed number
Looks like a normal telephone connector
No need charging, plug to use(built in special circuit get power from phone system)
Support voice recording during phone conversation

Special movable design cover hidden SIM card and micro SD card in case
Easy to use, just connect it with telephone and setting authoritative phone number will start working
Listening every phone calls

Applications:
Monitoring your home telephone conversation
Monitoring your office telephone conversation
Monitoring telephone for surveillance propose

Note: We do not take responsibility for illegal applications

Specifications:
Microphone: collect voice from telephone
Memory: maximum support: 32G T-flash card
GSM bands: 850MHZ / 900MHZ / 1800MHZ / 1900MHZ
Battery Capacity: 800mAh(built in charging circut get power from phone system)
Working time: over six months
Working Temperature: -10 ~ 50 degree
Store Temperature: -20 ~ 70 degree
Dimension: 59mm * 36mm * 25mm
Weight: 50g