These are for the Genshin Impact game.
Enter the following codes either in-game or on the official code redemption page (https://genshin.mihoyo.com/en/gift).
Gives: 50 Primogems.
Gives: 50 Primogems & some EXP books.
Should be redeemable on all platform versions of the game.
Expiry is not clear, but unconfirmed reports suggest 30th November.