Hardware Review: 8BitDo M30 - The Best Retro Controller On Switch

And it works with the original Mega Drive, too

8Bitdo M30 Review

8BitDo Presents its NEOGEO Wireless Controller

New ToeJam & Earl game, 8Bitdo controller get Genesis nostalgia right [Updated]

8BitDo NEOGEO Controller

8BitDo M30 review: Retro-looks, modern features - Dexerto

Hardware Review: 8BitDo M30 - The Best Retro Controller On Switch

8Bitdo TG16 2.4g Review

Getting Started with the 8BitDo Bluetooth GamePads - SparkFun Learn

Analogue Pocket Review – A Retro Handheld Marvel - Game Informer

Sega Genesis controller review - by Marc Normandin

8Bitdo's new wired Xbox and PC controller is designed like a classic Sega Genesis gamepad - Neowin