Hi Kolban, Thank You for the answer...
If I connect to a blescanner app, from smartphone to TW64, I can connect and even bonded, see the generic access profile, generic attribute and custom service, write values are only two attributes one in the generic attribute and one in the custom service. I ...

Hello Kolban, you're a light in the sea thanks for your work ...
I wanted to ask you: Should I vibrate a TW64 bracelet from ESP32, is TW64 a BLE server?

I have to vibrate the tw64 bracelet with command from esp32, somebody has an example?