== Module with TTGO written on it, featuring 18650 battery holder ==
This is also a clone and very likely not from TTGO. It is equipped with an OLED display and a 18650 battery holder including some kind of charging circuit. The antenna placing of the module is not very wise - the Wifi performance is reduced somewhat compared to modules with a better placing.
== Arduino ==
Select "WEMOS LOLIN32" to work with the modules.
== Using the OLED ==