Notes: The first single to have a promotional single pressed for it. Before this single, radio (and retailers, clubs, et cetera) were sent stickered copies of the singles (usually from Ferret & Spanner, the UK "plugging" [promotions] company). This single had it's own promotional 12 inch single. It had no proper sleeve, and the labels were simple white labels, with a rubber stamped graphic of the front cover!
 
The initial copies of the 7 inch single came with a mini-poster.
 
Mute reissued the standard 12 inch single in the early 2000's. The pressing featured a host of printing errors, including leaving the band's name off of the front cover, and reducing the labels down to just simple black text on a white background (the original labels have unique, colored text).
 
The limited 12 inch was the first single from Depeche Mode to come in a "double pack" (two records in one thick sleeve).
 
The "Slow Mix" of "It's Called A Heart". Alan Wilder put it best: "...you do need to be particularly devout to endure it - slowing it down to half speed made it twice as long - probably not a very good idea - twice the agony."