> For the complete documentation index, see [llms.txt](https://key.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://key.hideez.com/faq/how-long-does-the-hideez-key-work-before-the-battery-needs-to-be-changed.md).

# How long does the Hideez Key work before the battery needs to be changed?

FAQ — Question 4

The estimated operation time of Hideez Key is up to **6 months**, depending on usage and the quality of the battery. The highest energy consumption occurs when using audio signals on the Hideez Key.