There have been several iterations of this SEGA handheld released by AtGames over the years, and I always thought they looked soooo close to resembling the Dreamcasts’s VMU device. Thought I’d post a mockup.
These handhelds are decent for the price. They have a good screen, rechargeable battery via USB, some built-in games, and an SD card slot so you can add some more games. I never pulled the trigger on one because of their well-known sound issues.
However if they did release a VMU or Game Gear-styled version, that may be enough for me to buy one.