Judging by the wired joysticks, it sounds like you went with the standard definition model using the old AtGames hardware.
They also offered slightly more expensive Gold models last year that run on their next-gen hardware base, support high-definition video output via HDMI, and utilize Bluetooth-like wireless controllers instead of their old and not well liked IR based line of sight controllers (They kept the controller ports though for paddles and wired joysticks).
Their rep at AtariAge is hinting at even greater things for 2018. It sounds like SD rom loading that allows the user to play their own rom images to expand past the built-in lineup and the implementation of the popular Atari 2600 emulator Stella that is well liked for its accuracy and compatibility, are in the cards for this year's Atari Flashback 9.
And going off on a bit of a tangent, I haven't seen Atari Flashback Classics Volume 3 mentioned around here. It's the sequel to the two volume compilation that appeared in 2016 for the XB1/PS4 and includes 50 games like each of those did. 25 titles are already known about so far thanks to the trophy/achievement list and the ESRB entry for the collection, with the remainder left to be announced.
Adventure II (2600; Modern-day homebrew sequel)
Air Raiders (2600; M-Network release)
Aquaventure (2600; Never released 1983 prototype)
Asteroids (5200; Never released 1982 prototype)
Astroblast (2600; M-Network release)
Atari Baseball (B&W 1979 Atari arcade release)
Atari Football (B&W 1979 Atari arcade release)
Avalanche (B&W 1978 Atari arcade release)
Canyon Bomber (B&W 1977 Atari arcade release)
Fire Truck (B&W 1978 Atari arcade release)
Frog Pond (2600; Never released 1982 prototype)
Holey Moley (2600; Never released 1983 prototype)
Maze Invaders (Never released 1981 Atari arcade proto)
Millipede (5200; Never released 1984 prototype)
Missile Command (5200)
Monte Carlo (1980 Atari arcade release)
Pool Shark (B&W 1977 Atari arcade release)
Saboteur (2600; Never released 1983 prototype)
Sky Diver (2600)
Star Raiders (5200)
Star Strike (2600; M-Network release)
Super Breakout (5200)
Xari Arena (5200; Never released 1983 prototype)
Yars’ Return (2600; Modern-day homebrew sequel)
It marks the first compilation to give a significant look at Atari's black & white raster arcade heritage, albeit just the later titles after Atari shifted to microprocessors and left discrete hardware behind. It's also the first commercial compilation to feature Atari 5200 content.
It should be hitting the PS4/XB1 at retail and digitally in June (Based off a retailer listing that I saw).