MB&F just launched the pair of variants of the HM4, the Razzle Dazzle and Double Trouble. The titanium cases have rivets and hand painted "nose art". This decor is perfect for the design of the HM4. Interestingly Max also applied vintage "ammo" straps and faux patina dials to this pair, a la Panerai.
More photos can be seen on my blog.