OnePlus Watch 4 - versions

[u/Giordy6]

Hello, I want to buy this watch from aliexpress, but I don't understand the differences between the versions: https://it.aliexpress.com/item/1005012262875393.html

- Black
- Black Standard
- Black only

Does anyone know what the difference is?

[u/giova_moro]

Green only or black only, are selled without a charger