Enthusiasts will know that the camera image in the post is 1972's Olympus OM-1, a 35mm analog camera that has already been reimagined in digital form, it's most current iteration being the OM-1 II.
If you are someone wanting to purchase your first film camera or want to ... this has is its size. Olympus' goal with the OM-1 was to make the smallest 35mm SLR it possibly could, and it succeeded.