Parameters:
Bluetooth V4.1+EDR
Bluetooth Headset and Hands-free, A2DP, AVRCP
-92dBm RX sensitivity and +9dBm TX output power capability
24 bit Audio codec, -98dB SNR
10meter, class2
lDC5V/100MA-1A
It can work on almost bluetooth equipment(phone/mid/pc/and so on)
Instructions:
Power: Press the power button for 2-3 seconds, along with red and blue lights, boot into the back even state.
Power Pairing: Press the power button for 5-6 seconds, along with red and blue lights, after flashing red and blue alternately into pairing mode.
VOL +: Press the volume + button for 2 seconds, add up the volume a maximum sound, a warning sound.
VOL-: Press Volume - button for 2 seconds, cut down the volume a minimum sound, a warning sound.
Previous: Press VOL+.
Next: Press VOL-.
Telephone Answering: when to call, press the power button.
Refused to answer: when to call, press the power button for 2 seconds.
Redial last telephone number: double-click on the standby power button.
Charging: red light when charging, fully blue lights.
Package Included:
1 x Wireless Bluetooth Headset Sport Stereo Headphone Earphone
NO Retail Box. Packed Safely in Bubble Bag. 
