: Refers specifically to Episode 155 of the series. Depending on the specific broadcasting guide or season breakdown being used by the uploader (such as the international The Final Chapters saga), this episode typically places viewers deep into the climax of the World Tournament or the awakening of Majin Buu.
"vegamoviesdragonballzkaiep155720phdb" appears to refer to a specific, high-definition (PHDB - Premium High Definition) file or streaming link for a particular episode of the Dragon Ball Z Kai vegamoviesdragonballzkaiep155720phdb
For true collectors and quality purists, physical media is the gold standard. Funimation released "Dragon Ball Z Kai: The Final Chapters" on Blu-ray. These releases offer the highest possible video and audio quality (often 1080p, better than 720p), without any compression artifacts or buffering issues. : Refers specifically to Episode 155 of the series