Much more about the film - See the Arrow Video 4K UHD edition

Disc 1 - The Italian version original 116 minutes with Italian DTS-HD MA 5.1
and 2.0 stereo audio with English subtitles, with a hybrid English/Italian DTS-HD
MA 5.1 audio with English subtitles. Extras:

Audio commentary by Troy Howarth, Of Flies and Maggots: Feature length
2017 Documentary including interviews with Dario Argento, Fiore Argento,
Davide Marotta, Daria Nicolodi and Fiorenza Tessari, Franco Ferrini, Romano
Albani, Angelo Iacono, Luigi Cozzi, Sergio Stivaletti, Pier Antonio Mecacci,
Gianlorenzo Battaglia, Claudio Simonetti and Simon Boswell.
Original Italian and international theatrical trailer,
"Jennifer" music video directed by Dario Argento, Japanese gallery

Disc 2 - The International 110 minutes version and the US Creepers version
English DTS-HD MA 5.1 and 2.0 stereo audio on the international version,
English DTS-HD MA 1.0 mono or 2.0 stereo music mix audio for Creepers
English subtitles
Audio commentary by Derek Botelho and David Del Valle
The Three Sarcophagi: Visual essay by Arrow Films producer Michael
MacKenzie comparing the different cuts of Phenomena
Alternate 2.0 stereo mix on the international version, Creepers US
theatrical trailer, US radio spots