KZ TWS True Wireless Earbuds S1 S1D KZ Bluetooth 5.0 Earphone 1BA+1DD Hybrid Portable HIFI Stereo Sport Headset Noise Cancelling

Product specifications
Please know the version information before ordering：
S1D:Dynamic verison (1DD),White and Black .
S1 :Hybird technology verison (1DD+1BA),Gray and green.
The boxes of the two versions are also
inconsistent
Box Battery: 300mA
Earphone Battery: 50mAh
Working time: 3-4 Hours
Waterproof: IPX6
Charging time: About 1 Hour

Please Attention :
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

Note:KZ-S1S1D 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.)
*The first version of the charging compartment has 3 contacts! The second version of the charging compartment has 2 contacts! The third version of the charging compartment has 2 contacts, and the button key was canceled , the Indicator light changes,the old version of charging interface is type-C interface, and the new version is changed to USB interface . Three versions are sent randomly! If you receive one of these three versions, it is normal! if you mind this situation， please don't orders！ Please understand that! thanks ！
*Repeat it! S1/S1D new version of the charging interface is Micro USB interface! ! !