Avantree BTHS-NB17, User Manual, Page: 7 / 9

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). It will then automatically power off to indicate a successful reset. For
next use, please manually turn it on and it will automatically enter pairing mode.(Fig.13-14)
6
Clear the headphone pairing history
When the LED flashes RED every 5S and you hear a voice prompt “Battery Low”, you should fully recharge the device
for about 1.5 hours. The LED will remain RED while charging and turn off when charging is complete.
You can plug it into a USB wall charger/car charger (DC 5V / 0.5-2A) or computer USB port that is powered on.
(Fig.15-16)
Charging
Looks PINK
L R
hold 5s
(Fig.13) (Fig.14)
every 10s
low battery
DC 5V / 0.5-2A
OR
(Fig.15) (Fig.16)