For those who are interested: No ESP-Chip inside...
Received quite quick. But big disappointment after opening the cover and found a BL602 processor. I was hoping to receive an ESP8285 but no luck. Flashing of Tasmota not possible with this processor. It seems that there is in general a newer Version V1.2 and they all have that BL602 so buying from another supplier might bring the same issue to me.