Aaron Christophel | Hacking of the 1,20€ Smartwatch , First overview @atc1441 | Uploaded October 2024 | Updated October 2024, 3 hours ago.
The TLSR8232 Features 512KB of Flash and 16KB of RAM for plenty of firmware

Part 2 here: youtu.be/NvNtfvvK60E

The price will be shown higher in the link, check out the "From $0,99" / "3 From 2,99€" offers until you find the one from the link.
Link to the Watch: https://s.click.aliexpress.com/e/_DmzEqAt

No guarantees that your watch will have the same SoC as they seem to switch the model at random!