Features:Connection Type : Bluetooth V2.1 USB 2.0

Built-in Battery, USB Charging

Come with a USB cable

Working Distance: about 10 Meters

Support System : Windows 98/2000/XP/Vista

Fashionable design for you, you will not miss any phone call with it.Portable behind-the-head wearing design, very convenient

Features:Connection Type : Bluetooth V2.1 USB 2.0

Built-in Battery, USB Charging

Come with a USB cable

Working Distance: about 10 Meters

Support System : Windows 98/2000/XP/Vista

Fashionable design for you, you will not miss any phone call with it.Portable behind-the-head wearing design, very convenient for Sports. Usage: Press the middle button For about 10 seconds till the red and blue light flash alternately. Turn on the bluetooth device of your cellphone, and searching the bluetooth device named LSD-5011D.Normally it will not need pairing pass word, but if it is needed, pairing pass word is 0000.