400MHz radio receiver wallet and induction module for earpiece

The wallet has built-in 400 mhz radio receiver and transmits induction signal to earpiece.

Features:

•     Wallet receiver powered by rechargeable Li-ion battery, 600mAh
•     1 wallet RX has 2 frequency points: 446.055/ 446.180MHz or 446.305/ 446.430MHz.
•     1 walkie talkie TX (buy it from your local shop) can serve many wallet RX.
•     Distance between wallet induction module and micro earpiece isn't over 80cm