The Funimation Dragon Box Sets are DVD box sets of the Dragon Ball Z series, based on the original Dragon Boxes released in Japan. These box sets were released by Funimation 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 audio 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.