> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/emotivpro-v3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/emotivpro-v3/data-streams/real-time-data-streams-recording-and-playback.md).

# Real time data streams, recording, and playback

EmotivPRO allows you to view data streams and frequency analyses in real time whenever your headset is connected: both during a recording and when you’re not recording. EmotivPRO also allows you to open and playback saved recordings, including all data streams and frequency analyses.

Note: EPOC Flex now supports Performance Metrics if you map the sensors in the EPOC X configuration.