One of the many new features within the iPhone 6s is the ability for the 12MP camera on the back to record 4K video. It’s a big selling point for Apple, but what about storage space?

According to a video published by MKBHD, just how much a one-minute long video shot in 4K will take up in your iPhone 6s’ storage has been discovered. According to the screenshot captured by Ryan Jones (@rjones) of the hands-on video, a one-minute video captured at 720p HD at 30fps will take up 60MB of space on the iPhone 6s. At 1080p HD and 30fps, it’s 130MB of space. A 1080p HD video at 60fps will take up 200MB of space. And, finally, the 4K video at 30fps will take up 375MB of space.

As most will know by this point, a device doesn’t have the full marketed storage space available to the user, so if you are considering the 16GB iPhone 6s, that means you’ll be able to record 40 minutes of 4K video — and that doesn’t include whatever other space is taken up by the phone.

As for the 64GB model, that’s about four hours of 4K video, and, finally, the 128GB model will allow owners to record up to about 6 hours of 4K video.

Check out the video below.