Customization Features - addons & extensions, themes, toolbar.
Synced across devices - passwords, bookmarks, tabs and more.
Ad tracker blocking.
Password manager.
Package Parameters
l=<locale> - Install given Firefox locale. For example choco install Firefox --params "l=en-GB". See the official page for a complete list of available locales.
Notes
Looking for Firefox Developer Edition? Install the firefox-dev package.
Looking for Firefox Extended Support Release? Install the FirefoxESR package.
If locale package parameter is not present, this package installs Firefox in the first language which matches this list:
If Firefox is already installed it uses the same language as the already installed one.
The Windows system language.
If Firefox does not support the system language, it will fall back to en-US.