1. Ensure NB17 is in pairing mode correctly - LED will flash BLUE and RED alternately.
2. For Smart phone, tablet and PC
• Turn the Bluetooth feature off and then on.
• Delete your Avantree NB17 headphones from the Bluetooth list on your device. Try to pair it again.
• Clear the headphones pairing history - Make sure NB17 is powered on. Press and hold + and - together for about 5S until RED and BLUE LED flash simultaneously for about 2S(looks pink).