FUNimation Dragon Box Sets are DVD boxsets of the Dragon Ball Z series, based on the original Dragon Box released in Japan. These boxsets were released by FUNimation Entertainment under the titles of Dragon Ball Z: Dragon Box. The Dragon Box releases feature an aspect ratio of 4:3, the original Japanese audio (with options for an English track or English subtitles), the original episode previews (these are the only American box set releases to feature "next episode" previews), original opening and closing credits, and a complete collector’s booklet. Each Dragon Box contains roughly 1000 minutes of footage on 6 discs. The English audio features Dolby Digital 5.1 while the Japanese audio is in monaural.