Attention please :
KZ-S1 charging case upgrade in progress:
1. How to check the power of the charging case：Upgrade “Press the button on case”to”Automatically display the power when the earbuds are put in”.
2. Charging case is back to the original size, smaller and portable
During the upgrade period, new and old version will be delivered randomly without optional.
(Before upgrading, you need to press the button of the charging bin to check the power of the charging bin. After upgrading, cancel the button of the charging bin, put the headset directly into the charging bin, and the power of the charging bin will be displayed automatically.)
Please know the version information before ordering：
S1D is Dynamic verison (1DD),White and Black .
S1 is Hybird technology verison (1DD+1BA),Gray and green.
The boxes of the two versions are also inconsistent .
True wireless hybrid technology bluetooth headset
KZ-S1 Performance innovation, comprehensive upgrade
AAC Advanced Audio Transmission HIFI Sound Quality
No sense delay game mode Bluetooth 5.0