HERO BT 2 Way Audio Listening device.

Package/List of Accessories:
1x new A780 A680 CS-205 earpiece 
2x SR337(416) SW batteries
1x 4.5-Watt Powerful Amplifier Professional Bluetooth Neck loop, right for any Mobile phone, two-way talk and listen MP3. 
NOTE: Don't set it too high-Power output, prevent deafness
1x 110V Charger

PRODUCT DESCRIPTION
The HERO 800 Blue-Tooth Neck loop transmits the signal of a Mobile phone into a magnetic field covering either side of the user head. This field can be detected by a wireless Hero 800 CIC earpiece. Blue-Tooth Neck loop is very comfortable to wear and can be easily concealed under clothing. Its magnetic field allows the user total freedom of movement. This wireless distance is 10 meters or so, is very ample on many occasions.

HOW DOES IT WORK?
NOTE: Don't set it too high-Power output, prevent deafness
1)Wear earpiece in your Ear canal, (It will have a ZZZZ---very weak a hint sound)
2)Connect with your mobile phone, and pair it
3)Wear Neck loop in your neck
Support Two-way Talk and MP3 music, one transmits message with radio, the other wearing an earpiece and inductive loop who also has a radio can hear the message very clear. You can communicate with others freely once network exist when you use mobile phone.

Main Features: Wireless connection
To earpiece Max120cm, from whispering to deafening, this item can set 30dBm~128dBm.
control MP3 if your mobile phone has.
To cellphone <10 m
Voice dialing available.
Battery life 3-5 hours
Standby 72 hours
Build-in battery 480mAH
SN 0000 or 1111