I'm guessing they don't have any model numbers or brand names printed on them then. If they do, even if it's just a brand name, then a search should throw something up. If you can find the manufacturer's website, you might get some spec sheets.
Hands-on: Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
Samsung's beautifully designed Galaxy S8 makes for better VR experiences too
47 iPhone camera tips to help you take better photos
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.