This is a very nice little panel, specifically if you are building a USB charging wrist watch. It's perfect for that particular job. If you are doing anything else, not so much. Instead of having any exposed GPIO lines on the board, it has a pushbutton on the top left corner, and a super-small rotary encoder. To be useful in other types of projects, it would have been nice to have a QiiC connector where that switch is so you can use 2 GPIOs for other things, or as an I2C line. This model didn't have an LED on the charge indicator, so I can't see if it's charging the battery or not. Having either an LED there, or the ability to read that line from a GPIO on the ESP32 would be great. My only other real comment would be that it would be nice to have the LED backlight for the display controlled by an analog output from the ESP32 instead of a digital line from the GPIO extender. I have a similar board from another manufacturer with this and it is a very nice capability.