The original deauther sketch (which I'm sure the sellers of that watch are using) uses this library:
It is available in Library Manager as "ESP8266 and ESP32 OLED driver for SSD1306 displays by ThingPulse, Fabrice Weinberg".
The original deauther sketch (which I'm sure the sellers of that watch are using) uses this library:
It is available in Library Manager as "ESP8266 and ESP32 OLED driver for SSD1306 displays by ThingPulse, Fabrice Weinberg".