Comments about this watch: The SINN 6068 Frankfurt Dual Time Zone is a beauty jet black watch, for 12mm thick it appears ralatively thin on the wrist. First I hesitated to order it due to its case diameter only 38.5mm, but I was glad that I did. After receiving the SINN 6068, I compared it to my others (40mm Glashütte Original, 40mm Meistersinger, 40.7mm Junghans) they are very close in size (can not tell the differences by naked eyes).
Thanks to the clear, simple dial arrangement plus the thin bezel, this combination really makes the SINN 6068 a good size for elegant dress watch. The only con that I've been experiencing with this SINN 6068 is the second time zone inner ring rotating back and forth whenever my skin rubs on the crown at 10. If this crown at 10 had a working function like the crown at 3 pull out to adjust the inner ring and push in to lock it, that would make the SINN 6068 ideally perfect!
Overall, the SINN 6068 Frankfurt Dual Time Zone is a great looking watch! It's worth it to add it in my German Horologe Collection.