# Durability

Glass durability refers to the amount of time a user is able to watch content in a single energy depletion. The durability of a glass increases with levels and across glass types.

This graph illustrates the difference in maximum watchable time/full depletion of glasses between each type of glass across levels 1-30. The difference is due to the base durability being higher for glasses on a higher level which leads to a longer watchable time.<br>

<figure><img src="https://lh3.googleusercontent.com/6fA7uK7-9CXYRUDX_2bKC7i9IRaULU1M5Q_nlXVFO1-3tarS0Bt6nE1iixBJgxfuJj26c54OSZ7xMwGvqf7K8OEWpJ5syXwGyiYxQEsuKBuh8fTlW9EkMwTejVNUpEGXXje1jzfJXqRl7NWni4FNpGnSjd79Hca9qofchPQUK9fQLorBXLmN5GNGcjqOcw" alt=""><figcaption></figcaption></figure>