Caliber 4R : Monster

Caliber 4R (NH35/4R35 and NH36/4R36) is my preferred movement for my Franken Mod involving SKX007 and Mon5ter. With Caliber 4R, one gains the abilities to hand-wind and hack the movement. The latest model direct from Seiko to utilise this movement was the Monster G4 range as per above :

In a way, the movements used in the Monster range had seen changes over the years. G1 had Caliber 7S26 (similar to SKX007), G2 had Caliber 4R36 (similar to 5), G3 had Caliber 6R15 (similar to Sumo), and now G4 goes back to having Caliber 4R36.

Personally, the G4 with rectangular Cyclops over the Day-Date seemed kind of an overkill to an otherwise acceptable dial; so I would probably stick back to the G3.