The cooldown for the Voice Recorder in JJS appears to be about 30 seconds before it can be used again. A separate item guide also says the item becomes reusable after it is thrown, which matches that cooldown behavior.

Quick Scoop

Item| Cooldown
---|---
Voice Recorder| About 30 seconds 2

Notes

  • One guide describes the Voice Recorder as a reusable item that stuns players in range when thrown, then has a reuse cooldown.
  • The wiki entry confirms it is an item in Jujutsu Shenanigans, though the snippet does not show the full cooldown text directly.

TL;DR: Voice Recorder cooldown is roughly 30 seconds in JJS.