TURN ON Method 1: Take out the earphone from charging case, the earbuds will turn on automatically. The led indicator will flash red and blue. Method 2:Touch and hold the MF button for 2-3 seconds TURN OFF Method 1: Touch and hold the MF button for 2-3seconds to turn OFF the earphone, the led indicator will flash red rapidly then lights off. Method 2:Put back the earbuds into charging case, the earbuds will turn off automatically and start being charging. Tips: If the earphone without paired any mobile device, the both units will be turn off after 5 minutes; or if the bluetooth distance is beyond 10-12m and without paired and device, the both units will be turn off after 5 minutes. Take out both earbuds from charging case, it will auto turn on and auto paired with each other. Once paired.the led indicator will flash red & blue quickly. Tips: If pairing is unsuccessful,Touch and hold the MF both earphone around 5 seconds simultaneously till the led indicator flash blue ONE time; Then turn on both unit again, they will auto pairing. Activate the Bluetooth function on your mobile device, select the "TWS 5.0" from the list of available Bluetooth devices. Click it to pairing, once earphone paired with mobile device, you will hear a beep tone and the led indicator will off.