Sony PlayStation DualSense Edge CFI-ZCP1 Instruction Manual page 7

DualSense Edge Wireless Controller features
EN
Rear
L2/R2 stop sliders
Adjust the stroke of the L2/R2 buttons ( page 16).
Back button
Choose from the two back button types included to best
suit your playstyle. Attach the back buttons ( page 13)
and customise their functions.
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