Correct Orbi model number: RBR50 or RBK50?

Hello: I use a Netgear Orbi router with one satellite in my home here in India. I am confused about the model number. The sticker on the router as well as its printed documentation tell me that it is model number RBK50, but the Orbi app on my iPhone says that the model is number RBR50. Could someone please help me understand what's going on? Thanks!