I don't know if we can say this is the same watch. The dials are completely different... Kanwar's is a round dial (Probably a Samsung Galaxy 3) whereas Alice's is a rectangular dial (Probably an Apple iWatch 5/6)...
with this being said, Alice is not the one to wear watches... in fact, only 1-2 pictures in her Instagram have her wearing a watch and it is a normal, gold plated tan strapped watch. She probably started copying some of Kanwar's styles and mannerisms (as some couples do) after getting together with him because he's the one to wear solid colors with matching accessories