: Stands for Dolby Digital 2.0 , indicating the audio is in stereo (two channels) rather than 5.1 or Atmos surround sound. HD : A general label confirming high-definition quality. Key Differences in the "Unrated" Version

: This is Spanish for "Unrated," referring to the "Unrated Edition" which includes more gore and profanity than the PG-13 theatrical cut.

If you are looking for this specific version, note that the Unrated Cut includes several changes not seen in theaters:

Codec: HEVC / H.265. Resolution: Native 4K (2160p) HDR: Dolby Vision, HDR10. Aspect ratio: 2.39:1. Original aspect ratio: 2.39:1. Blu-ray.com

: Features more explicit blood splatter and detail during the elevator scene and the pressure washer scene.