The Teufel AIRY TWS 2 can be connected to laptops and PCs without any problems, provided these devices support Bluetooth technology. - The AIRY TWS 2 use Bluetooth 5.2, which enables a stable and reliable connection. - There are reports that the previous models sometimes had problems connecting to certain devices, but the AIRY TWS 2 seem to overcome these problems for the most part. For example, the connection with a Microsoft Surface works smoothly and there are no indications of specific compatibility issues with Lenovo laptops or other PCs. - If connection problems still occur, deleting the Bluetooth connection and re-pairing may help, or it may be useful to switch the device's Bluetooth function off and on again.

Hello, unfortunately you can't. I have tried it but it does not work.

found out. has to do with the 4x charging option in the case. (total hours of power)