Nano SIM GSM induction card

credit card size, worldwide use, compatible with all electronic earpiece, for two way secret communication.

Main Features:

1.     Nano SIM card support
2.     GSM 2G 850 /900/ 1800/ 1900 MHz
3.     Size: 85 x 53 x 5mm
4.     Weight: 34g
5.     Battery: 550mAh 3.7V
6.     Working time: 3 hours
7.     With sensitive Microphone, support two way communication.
8.     Working distance to earpiece: max. 70 cm
9.     The initial sound has been set to the highest level
10.     Support updating IMEI number by sofeware

What in the package:

1 * GSM card
1 * Micro USB charging cable