Ryobi BD4600 belt. 150 XL 037

Good afternoon,
Could you help us find a belt for my husband’s Ryobi BD4600 sander? He just got it for Christmas and already the belt it came with has snapped in two. There is some Chinese or maybe Japanese writing on it and then the number “150XL 037”. What is a good brand to get?
We appreciate your help and look forward to a reply,
Debbatar-Debbie B.