Dewitt Academia Tourbillon Force Constante à Chaîne

Written by James Matthews

Monday, 1st June 2009

DeWitt has enhanced its legendary constant force tourbillon with a system that relays energy to its associated power reserve indicator. Rotating the crown when winding the barrel-spring drives a miniature chain, which uses an intermediate wheel to activate the power reserve indicator sliding on a worm screw. Three years after developing an ingenious patented regulating system – three extra wheels transmitting impulses of identical force to the tourbillon, whatever the barrel’s degree of tension – DeWitt has now taken innovation to even greater heights.
Movement

Manually-wound, DW8050 calibre, tourbillon with constant-force device, 25 rubies, 21,600 vib/h, 72-hour chain-driven power reserve, flat balance-spring.
Functions

Hours, minutes, power reserve indicator
Case 950 platinum, 43 mm
Sapphire crystal front and back

Dial

Black with Côtes de Genève decoration
Opening over constant-force device at 8 o’clock
Opening over tourbillon cage at 5 o’clock
Rail power reserve at 10 o’clock
Bracelet/Strap

Black alligator leather with 750 platinum folding clasp