Features:

1、worldwide plug adapter with GSM BUG (EU, UK and  USA Plug) 
2、highly conceal,cannot find
3、never power off
4、highly quality world travel adapter with USB
5、USB can charge all digtial product
6、Voice trigger call back
7、Can set call back interval
8、Auto Call back function

Specification:

GSM band module: 850/1900MHZ or 900/1800Mhz
Voice sensitive: -75db
Filter mode: 4 sensitivity voice filter
Alert mode: 3 SMS number&1 calling number
Control mode: SMS control
Power: Direct AC power supply
voltage: 100V~240V
AC Power Adaptor: 3 x Adaptors
weight: 145g
Dimension: 63 x 51 x 47mm