1655, 16550, 16570, 216570, 226570.
Men's / Unisex
Automatic (Calibers 3185, 3186, 3285)
Originally 40mm, upgraded to 42mm in more recent models
Stainless Steel
Stainless Steel / Oyster Bracelet
White or black with luminescent markers and hands
Fixed 24-hour graduated bezel, an additional 24-hour hand (orange or red depending on the model), and date function. Designed for cave explorers to distinguish AM from PM in environments without sunlight.