Product Name: COMPATIBLE Vivo Y91 On Off / Volume Button – Black
Compatible Model: Vivo Y91
Type: External Button Set

Function:
Acts as physical power and volume buttons
Allows user control of device functions
Provides tactile feedback when pressed
Replaces worn-out or missing buttons
Restores proper button usability

Installation: External / Internal replacement (may require technician)
Condition: Compatible Replacement Part