If you are geek, you will get it:
✔ Meta title
✔ Meta description
✔ Meta tags
✔ Custom slugs
✔ Language id in URL
Other features
✔ Sitemaps autogenerated
✔ Language in sitemap
✔ Alternate links
✔ Google Analytics
✔ Google Webmaster Tool - Meta Verification
✔ robots.txt