System button on Beats headphones and earphones
The system button on Beats Studio Pro is located on the right earcup, below the “b” logo .

The system button on Beats Fit Pro, Beats Studio Buds +, and Powerbeats Pro 2 is located inside the charging case (near or between the earbuds).

The system button on Beats Flex is located on the left control module.

Note: There’s no system button on Beats Solo Buds. To put them into discovery mode, press and hold the button above the logo on either earbud until a tone plays three times.