How does Mi Bluetooth headphone finish series pairing?

Explanation:
Mi Bluetooth headphone has been serial paired before delivery. If clear the serial pairing record, it can be re-paired. Serial pairing method:
1. First, confirm whether the indicator light of the two earphones is red and white flashing at the same time (the indicator light is red and white flashing).
2. If the red and white lights are not flashing at the same time,turn off the earphones first. In the shutdown state, long press the touch panel of both earphones for 10 seconds until the indicator light flashes red and white alternately for 3 times and then goes out.
3.Put the two headphones close and boot at the same time(boot intervals should be less than 20 seconds, too long to get the headset will enter the Bluetooth pairing state), the light is red, white and light double flash at the same time, about 2 ~ 3 seconds after series, series after the success of the left earphone light is put out, the right headphones light white lights flash slowly, at this point you can use mobile search and matching.(Sometimes only one headset exit red and white flash at the same time. In this case, you can try to restart both headphones several times.)