1. The new developed GSM BOX has a build-in dual band GSM module that works in both of Four Band mobile phone networks.
2. Once insert a GSM SIM card and turn on the power, it will automatically pick-up calls from any mobile phone or telephone. The powerful inductive coil will creat strong signals to drive earpieces within 60cm distance.
3. One pc 35db top sensitive microphone ensures your partner hear the whisper voices, even the GSM BOX is hidden under the clothes.
4. The SOS/ Reset button allows you to cut off audio output signals to avoid earpiece detectors. GSM BOX has a built-in rechargeable 920mAh battery. It supports 5 hours talking time and 72 Hours standby time. Full recharge takes 4 hours

1 x USB charger cable
1 x Operating english Manual