Reference 438.SB serves as the closed-back version of the Tetra Terra, offering the same 29.5mm stainless steel case, terracotta dial, and DUW 4001 movement as the sapphire-back model. This watch is rated for 5 atm of water resistance and comes on a beige vegan velour strap.
Movement Type
Manual
Caliber
DUW 4001Jewels
17
Reserve
43
Frequency
21600
Hands
Small Seconds
Shape
Square
Lug Distance
18.00 mm
Material
Stainless Steel
Glass
Sapphire
Thickness
6.50 mm
Diameter
29.50 mm
Water Resistance
50.00 m
Dial Color
Red
