Magnetic Spy Earpieces with Amplified Induction Neckloop

Amplifier: 4.5 Watt
Consumption Current: Depends on volume
Battery Type: Rechargeable lithium battery / 230mah
Battery Life: Listen time 3-4 hours
Battery Charge: 3-4 hours
Transmit Range: To magnetic earbud is 15cm, To normal earpiece is 30cm
Loop Diameter: 30cm
Handsfree length: 75cm
Package Weight: 0.13kg

Feature:

Magnetic earpiece is very tiny, when put into ear, it's invisible to eye.
With the 3.5mm audio jack, it's easily to connect to mobile phone.
Built-in rechargeable battery, easy to carry, better sound quality.
Economic solution for secret communication: cheating at examination, negotiation assistance and so on.

With in box:

2pcs Φ:3*2mm small magnet earpiece
1pcsΦ:5*5mm big magnetic earpiece
1 steel stick for taking earpiece out from ear

1 USB charger
1 USB charging cable
1 neckloop