FREDI HD PLUS Spy Earpiece Invisible Mini GSM Bluetooth Phone Box, Hidden Wireless Earphone NA Voice Recorder  (0 inch Display)

Feature: 1. Miniature Earpiece: Headset with a miniature wireless induction receiver that converts audio signals through electromagnetic induction for covert communication when it is inconvenient to expose the headset. 2. Automatic Connection: Compact and portable GSM module automatically connects the call and then transmits the call sound to the headset in real time. 3. Stable Signal: The headset uses a cell phone signal, so you can talk anywhere there is a cell phone signal, stable signal and performance. 4. Features: Wireless headphones have small size and loud sound, comfortable to wear without overburdening your ears. 5. Clear Voice: Small earphone is widely used in many departments, using this device, you can clearly hear each other's voices. How to Use: Step 1: Use the for Nano card and insert it into the GSM module, the GSM module will automatically turn on. Step 2: Put the 337 battery into the headset and put the headset in your ear Step 3: Use another phone to call the phone number of the for Nano card, the GSM module will answer automatically Step 4: Just put the GSM module on your bust