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The SF2000 is a cheap hand-held emulation gaming console which was released in early 2023. Although the device itself is sold by a variety of vendors, it was the vendor "Data Frog" who caught public attention, and so the device is often simply referred to as "the Data Frog".
For a cheap device, it's actually fairly capable - most Game Boy, Game Boy Color, NES and Genesis/Mega Drive games play at full speed, and many arcade, Game Boy Advance and SNES titles do as well. The device has an IPS panel (not OCA laminated), and a user-replaceable 18650 battery, which can be charged via a USB-C port on the device. It also has analog A/V out (note: not HDMI), meaning it can be connected to a CRT TV - the type of display most arcade, Genesis/Mega Drive and SNES games were originally intended to be displayed on. It has a built-in 2.4GHz antenna, and can receive input from a compatible wireless controller (usually sold separately).
Some downsides to the device: There's a decent amount of screen-tearing, due to a difference between the display panel's refresh rate and the rate at which it's fed image data by the rest of the hardware (although this has been shown to be mostly addressable via software changes). It's mono only; and worse yet, you only get the left-channel audio (so stereo games just lack the right audio channel entirely). There's no headphone jack (although there is a volume wheel), screen brightness cannot be altered (it's fairly bright), SNES and Game Boy Advance are hit-or-miss in terms of performance (some games are fine, many games run unplayably slowly), the stock firmware is closed-source so the device's performance may never get any better than as-shipped, and some folks have had issues with the buttons (quality control is hit-or-miss, and some folks have had terrible button response, such as a d-pad that can't do diagonals reliably, or ABXY buttons that sit flush with or even go under the case). Finally, while the device features A/V out, it does so in a slightly odd resolution (576i) which may result in borders being chopped off on your TV, depending on how your TV deals with the signal.
It includes ROMs. Other similar devices are allowed to be posted because they don’t admit ROMs are included. This listing however has a PDF of all the ROMs.