Hublot

Big Bang

Big Bang Senna Foudroyante

Today, in Japan, the second Big Bang with the motor-racing champion's signature was
launched. Within the framework of an exhibition of previously unpublished photos featuring
Ayrton Senna, taken by his photographer friend Norio Koike, Hublot confirmed its support
for the Instituto Ayrton Senna, founded by Viviane Senna, the sister of the late racing
driver. By her side, Jean-Claude Biver presented to the media and the public the second
version of the watch, called “Big Bang Senna Foudroyante”, part of the sales revenues of
which will be donated to the Instituto Ayrton Senna.

The Big Bang Foudroyante Senna, a 500-piece numbered limited series, sports the colours of
Brazil, like the first edition: yellow and green split-seconds hand, yellow minute markers,
Brazilian flag on the case-side element, Ayrton Senna's signature in green on a matt black dial,
and a yellow bezel lug. Its split-seconds chronograph movement features a new complication,
the Foudroyante, which enables the calculation of one-eighth of a second. The serial numbers
on the back are engraved in yellow ink on black ceramic, and the logo “Instituto Ayrton Senna”
appears as a transfer on the sapphire crystal.

Movement

Self-winding mechanical split-second Foudroyante chronograph, Hublot
HUB44 RTF calibre developed with La Joux-Perret

Bridges Polished, satin-finish with chamfered edges

Oscillating weight Tungsten carbide with dimpled surface coated with black PVD

Bottom plate Sand-blasted; rhodium-plated

Barrel With reinforced spring

Escapement Glucydur balance spring

Power reserve 42 hours

Dial

Matt black microblasted with yellow luminova applique markers,
yellow minute markers, Foudroyante counter at 9:00, with Ayrton
Senna signature in green at 6:00

Hands

Chronograph hand rhodium-plated with yellow Duco, hours and minutes
hands rhodium-plated with yellow luminescent, black Split-second hand
with yellow and green Duco, yellow Duco Foudroyante hand