First Handheld for Gen 3 Pokémon

Hey!

I am looking for a handheld to replay Gen 3 Pokémon games from GBA.

Anyone with suggestions? I am new on this road.

Here's what it's a priority:

• Under €80.
• Vertical or horizontal. No clamshell models.
• Clean design [similar to GB/C or GBA, opaque].
• Probably wi-fi for trading and updates.
• Real Time Clock.
• Reliable with saves.
• Decent durability, autonomy and screen.
• Anything else I might be missing?

What is not a priority:

• Audio.
• OS [as long as I can play, update, export/import quickly]

I tried to be as clear as possible. Please forgive me if any of these "requirements" is out of budget or impossible. Still learning!

Thanks in advance (no pun intended)! :)