You can hear your voice immediately with feedback or a set delay.

When you want to hear your voice right when you practice singing
When you want to delay your voice to improve your stuttering speech jammmer

Check your voice.
Also try recording your voice to see if it improves.

Lowest latency when using a wired headset (recommended)

Using a Bluetooth headset can cause greater latency than wired. It greatly depends on the performance of your device or Bluetooth headset.