"B"rightz Titanium Perpetual Calendar Big Date.
The SAGV007 is one of the Brightz lines lesser known model with a production window of less than a year in the early 2000's.
The watch is full titanium like many of Brightz's earlier models and is powered by the kinetic 7D movement which features a perpetual calendar with the watches signature big date window.
Although the watch may look large, it measures only 40mm not including the crown/crownguard.
π·Brightz "Big-Date" SAGV007