A few weeks ago MB&F unveiled the HM4 Only Watch, created for the Only Watch 2011 charity auction which will happen in Monte Carlo in September. Working with Chinese artist Huang Hankang, Maximilian Büsser used the Horological Machine No. 4 Thunderbolt as a base for the HM4 Only Watch piece unique. It features a detachable panda flying on the HM4.

Here are a couple of photos of the HM4 on Max Büsser’s wrist. The panda isn’t actually very evident on the wrist, unless you look closely. More photos of the watch soon.

– SJX Update: Many more photos of the MB&F HM4 Only Watch.