1. Private tooling with design patent protected by Chinese government.
2. The ANC is above 26DB-30DB,the earbuds produce powerful sound with goood bass!
You could select "ANC on" , "ANC off" or "Transparent mode" to enjoy music.
3. Full inspection for each piece with ANC test machine, RF testing machine,Acoustic curve testing machine and shielding box etc to ensure good quality,
4. CE/RohS/Reach certificates and other Europe testing reports applied.
5. Both touch the earphones and press the button of the charging case which could reset the earphones.
End user could use it very easy and convinient which is helpful to the after-sales service.
6.The playing time is about 4 Hours by maxium volume, the total playing time is up to 20 hours.