In the meantime I have received the product and can answer the question correctly myself (perhaps it was different in an earlier version). The information on Digitec is completely wrong. A 6 cm USB-C cable is supplied, not a micro-USB cable as stated. Since the device has a USB-C port, this also makes sense. The weight stated here (173g) includes the charging cable, the battery itself is only 165g (excellent weight ratio if the 10000 mAh is correct).

Yes, the cable supplied is micro USB, suitable for the charging socket of the PowerBank.
On mine, the short cable is always on the charging socket and on the USB-A there is a longer cable on micro USB/USB-C/Lightning(Apple).