microsoft graph api: ability to find the attachment link of a list item

is it possible to get the link of the attachment that is attached to a list item?

there is a attachment field but that only gives if there is an attachment or not. It does not give the url of the attachment.

the query looks like below:

https://graph.microsoft.com/beta/sites/mytenant.sharepoint.com:/sites/mysite:/lists/OEC_Docs?select=id,name,lastModifiedDateTime&expand=items(expand=fields(select=Title,Attachments,OptyNumber))