1. For example, wear it on left hand;

Make sure button on the right side of this smart band.

2. Use the middle finger’s first joint of right hand to carry on the position B of this smart band.

3. Place your index finger of right hand on the top of this smart band.

4. Use the thumb’s joint of right hand to push on the position A of this smart band.

5. According to these yellow arrows of the below picture to exert force on this smart band, and then it will be split to be Bluetooth earphone.