Chopard L.U.C. Tonneau

First automatic "Tonneau" shaped movement with decentred microrotor
Men's watch with mechanical calibre and automatic winding
Movement
· Calibre L.U.C 3.97 Tonneau
· Casing hight : 27.00 (mm) or 12''' (Lines)
· Casing width : 27.55 (mm) or 12 ¼ ''' (Lines)
· Total hight : 27.60 (mm)
· Total width : 28.15 (mm)
· Total diameter : 27.40 (mm)
· Total thinkness : 3.30 (mm)
· Winding : automatic with cam
· Number of jewels : 29 (+3 non functional)
· Frequency : 4 (Hz) or 28'800 A/h
· Lift balance angle : 53°
· Balance-spring : flat, Anachron
· Balance : three-armed circular
· Escapement : FAR 20.2
· Escapement wheel device : Rubifix
· Balance anti-shock divice : Incabloc
· Index-assembly : Triovis
· Power-reserve : approx. 65 hours
Special Features
· "Tonneau" shape movement
· Two superimposed mainspring barrels (L.U.C "Twin")
· Oscillating weight (heavy metal with 18 kt gold layer) ball bearing mounted
· Bridges with straight Geneva wavy lines ("Côtes de Genève") decoration
· Instant display of the date through aperture
· Second hand at 6 o'clock
· Certificate of Swiss Official Chronometer Testing Institute (COSC)
· Limited and numbered up to 1860 pieces in each gold colour (18 kt; yellow, white and pink gold).

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