Function & FAQQ: Will the sleep earbuds turn on and turn off automatically ?A: Yes, open the charging case and take out the sleep earbuds, they will turn on and paired automatically, and when you put them back to the charging case,it will turn off automatically. (Please make sure the charging case was charged.)Alternative, it also can be turned on manually by touch and hold 3seconds.Q: How if only one earbud connected? （The Right and Left earphone not paired）A: Firstly, kindly make sure Bluetooth function was turned off on your phone before sleep earbuds connected with each other. Secondly, take the earbuds out and make sure to press & hold the touch button for 8 seconds till the indicator blink in red and power off. After this reset process, please put both earbuds back to the charging case to have them connected to each other at first, then go to the Bluetooth menu on your device and choose X6s.*Note: If you accidentally get only one earbud paired with phone, please try “Reset” options. (Pls refer “Reset” details in manual)Q: The other person cannot hear my voice clearly when make a call?A: Please adjust the volume on your phone. Make sure there is no source of interference nearby. Stay close to your phone.Q: Could I adjust the volume through my earbuds ?A: Please adjust it through your device. There is no volume control button on the earbuds as for the small size and compact design.Key SpecificationsProduct model: Pro X6/X6sBluetooth chipset: V5.0+EDRWorking range: 12-15 metersFrequency range: 20Hz20KHzEarplug weight: 3.7gEarplugs with charging case: 34gHeadphone battery: 50mAhCharging box battery: 350mA Microphone sensitivity: 42dbDrive sensitivity: 98db+-5dbHeadphone working time: 4-5 h