If you have ordered the Gigaset Comfort 520HX from us, you can call up the receipt in your customer account at any time. According to my research, Wingo only offers a wired telephone solution. You can find details here: https://www.wingo.ch/de/hilfe/faq/welche-geraete-sind-mit-wingo-fix-kompatibel. In this case, a set with a base station like this one should be compatible: https://www.digitec.ch/de/s1/product/gigaset-comfort-550-ip-ch-version-telefon-18391232. For further questions about compatibility, I recommend contacting Wingo support directly.

After research I found the following listing https://ecs.unify.com/produktiv/en/e-dects6-l30001b57a1ak.htm. So this item L30250-F600-C510 is only the handset/an extension handset. The charging cradle would be with item number L30250-F600-C512, which corresponds to our item Unify Charging Stand Europe.