PowKiddy has started selling the Q20 Mini, another retro handheld based on a Nintendo design. Supposedly, the Q20 Mini lasts up to four hours between charges and can emulate numerous systems, including the SNES and the PlayStation 1.
https://www.notebookcheck.net/PowKiddy-Q20-Mini-New-retro-handheld-launches-globally-with-Game-Boy-Micro-Famicom-Edition-vibes-for-US-39-99.551211.0.html