1)The communication distance could reach about 10 meters
2)The batteries could be used continuously for 8 hours at communicating
3)Awaiting time could reach 200 hours
4)Support Bluetooth protocol BF1.1/1.2
5)Compatible with most of the Bluetooth mobile phone,
support other Bluetooth equipments
6)Import Polaroid lens could proof against UV rays,strong
rays and harmful blue rays
7)Could answer the phone call freely at leisure time,travel
and play.It could protect your eyes from UV rays'
damaging
8)Could phone other at the same time of writing and
reading