IWC IWC - IW3557-01 Aquatimer Deep Three

Aquatimer Deep Three

REF. IW3557-01

Case

MaterialTitanium

Diameter46 mm

ShapeRound

CrystalSapphire

Case backClosed

Water resistance300 m

Dial

ColourBlack

IndexesStick / Dot Hands: Stick

HandsStick

Movement

Caliber30120

Typeautomatic

Reserve42 h

Explore caliber→

In Context

At 46 mm it is a large watch — well above this catalogue’s 40 mm median, and enough to dominate a narrow wrist. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 300 m is a professional diving rating, far past any demand a wrist is likely to make of it.

The movement winds itself from the motion of your wrist. 42 hours of reserve carries it overnight, but not through a weekend in a drawer. At 28,800 vph the seconds hand advances 8 times a second.

IW3557-01 stands on its own in this catalogue — no other reference here shares its base number. It pairs a black dial with a titanium case. Introduced in 2014.