Long press the power button of two earbuds at the same time until LED light flashes in blue and red alternately.2. Double press one of the earbuds and wait for one LED light to flash in blue and red alternately again.3. Please turn on Bluetooth on your smartphone and choose the corresponding name of the earbuds.4. The LED lights will flash slowly in blue. It means the earbuds and smartphone are paired successfully.For more information, please visit Product Page.