The Flex Controller benefits from its customization and ability to meet the needs of gamers with limited mobility. The expansion ports connect to accessories such as Pretorian’s Smoothie 75, a 75mm-wide circular button, or the Smoothie 125, a larger 125mm-wide button. For the joystick inputs, the device can connect to the Pretorian Ultra Joystick, a hand-sized standalone joystick.
It is important to note that the Flex Controller will also work with various third-party expansions, such as those from Hori, Real Arcade, and others, though the company does not guarantee compatibility with certain devices.
Image Credit: Pretorian Technologies