Big Pilot’s Watch Shock Absorber Tourbillon Skeleton XPL

In Context

At 44 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. 100 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 80 hours of reserve puts it well past a weekend — several days off the wrist and it is still going. At 28,800 vph the seconds hand advances 8 times a second.

IW3577-01 stands on its own in this catalogue — no other reference here shares its base number. It pairs a skeleton dial with a ceratanium case. Introduced in 2021. Beyond the time it carries a tourbillon.

The IWC-manufactured 82915 caliber is an advanced automatic movement featuring a flying minute tourbillon, meticulously designed to withstand extreme shocks using IWC’s patented SPRIN-g PROTECT® shock absorber system. First introduced in 2021, this innovative mechanism incorporates a cantilever spring crafted from bulk metallic glass (BMG), renowned for its exceptional elasticity due to its amorphous atomic structure. The spring's unique geometry, recalculated specifically for this tourbillon movement using advanced simulations, ensures efficient distribution and absorption of shock forces, enabling the movement to survive accelerations exceeding 10,000 g. To enhance the shock absorber’s effectiveness, the 82915 caliber’s plates, bridges, and rotor are extensively skeletonized, significantly reducing the overall mass. The flying minute tourbillon itself consists of just 56 components and weighs a mere 0.663 grams, prominently displayed at the 6 o'clock position. The movement employs IWC’s efficient Pellaton winding system, incorporating wear-resistant ceramic components to reliably deliver an 80-hour power reserve.