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3.5“ Jack Earphone for Old Mobile Phones Nano Magnet Earpiece 108B Voice Audio Transceiver Listening Aid Headphone Transmitting Neck Loop

$9.99 – $29.99
a complete set for exam purpose ,with nano magnet or earpiece for optional .
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337 Battery SR416SW 1.55V Silver Oxide Battery Watch Hearing Aid Single Grain Packing Button Cell for Mini Earpiece

$0.90 – $6.50pcs
Battery lasts for 6-8 hours in earpiece .
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Battery Icon Display Gsm Card Phone VIP Lable Exam Cheating Tool Invisible Earpiece Audio Sender GSM BOX

$44.99 – $63.99

Transparent label for battery information display GSM card ,send converstaion to earpiece in ear . 

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Car Key + Bluetooth Audio Transmitter Inductive Gsm Sender Exam Tool 108B Invisible Earpiece Set

$44.99 – $64.99

Dual Function , by GSM or by Bluetooth to earpiece

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Gsm Card Phone Voice Inter-phone Bluetooth Transmitter Hand-Free Audio Sender Exam 108B Invisible Earpiece Set

$49.99 – $64.99

Dual Function , by GSM or by Bluetooth to earpiece

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Lcd Display Gsm Card Phone VIP Lable Cheating Tool Invisible Earpiece Audio Sender Exam

$44.99 – $63.99

Lcd Display for battery information GSM card ,send converstaion to earpiece in ear . 

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New Gsm Card Phone Voice VIP Hidden Communication Device Hand-Free Audio Sender Exam 108B Earpiece

$45.99 – $59.99

GSM card ,send converstaion to earpiece in ear . 

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RF Nano Magnet Set Working as Wireless Earphone Voice Receiving Headset For Audio Transmitter

$4.80 – $6.00
if you are not familiar with such product ,We kindly beg you not buy!!! RF NANO earpiece for exam transmitter . Does not work alone or directly with mobile phone , must work with special transmitter .
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