- The newly developed GSM BOX has a built-in dual-band GSM module that works in both of Four Band mobile phone networks.
- It provides two-way covert communications via mobile phone networks. Once inserted a GSM SIM card and turning on the power, it will automatically pick-up calls from any mobile phone or telephone.
- The powerful inductive coil will create strong signals to drive the earpiece within 60-100cm distance.
- It has a 35dB top sensitive microphone that ensures your partner will hear even when whispering, while the GSM BOX is hidden under the clothes.
- The GSM BOX has a built-in rechargeable 650mAh battery.
- It supports more than 3 hours of Talking time, or 48 hours of Standby time.
- Size: 85 x 50 x 4.5 mm.
- Weight: 30g.