Waterproof Smartwatch?

I need a smartwatch for swimming training. In more detail, I have the GT Elegant from Huawei. The functions are enough for me completely. I do not need an MP3 player on my wrist or similar bells and whistles. The clock does not have to give me any text messages to read; it is enough for me to know that there's a message. Somehow I have a bad feeling with IP68.

Does anyone have this or a similar clock in use and can report more about it (waterproof)?

If you only need a tracker, in addition to notifications and running and pulse (except in the water) also trains and swim, then I can recommend you the MiBand 4 of Xiaomi, which holds up every track, works fine with me. 35 euro on Amazon.