But after a quick glance at these updated music gadgets in person, we found that they are seemingly not as advanced as some of their vintage counterparts. The dimensions of We Are Rewind’s Bluetooth cassette player are roughly the same as Sony’s first-ever Walkman from 1979 — but by the time the cassette Walkman ended its initial run in the early 2000s, cassette players were practically the size of cassettes themselves. Fiio’s DM-13 Bluetooth CD player has a large square design that resembles a Sony Discman from the late 1980s, even though, by 2001, we had super slim round CD players from iRiver, Panasonic, and Sony with enough anti-skip protection to make it through an entire album.