London Hambergé Day-Date By Cecil Purnell Tourbillon, double-calendar (day-date), Power reserve, Case and complicated movements, waterproof at 8 atmospheres.

• Case & crystals: Complicated case made of eight components, overlapping « sandwich style» and fixed by 4 pink gold screws (5N18) with visible slots. Titanium bezel (G2D), steel for the centre part (316L), three pink gold pushers (5N18). Heated carbon fibre inserts applied just above the bezel, with unique and characteristic relief. Case Ø 57,50 mm x 46,20 mm, height 12,9 mm. Anti reflection treated curved sapphire crystal and sapphire back crystal. Water resistant to a depth of 80 meters (8 ATM).
• Dial & hands: Dial « London » with Arabic numerals. Pink gold plated indexes, reflecting hands, with special « superluminova » treatment for better night visibility. Deep grey dial.
• Bracelets: Noble, skin friendly rubber, stamped with initials : CP. Steel folding buckle.
• Complicated movement : Calibre CP 2771 Tourbillon, manual winding, manufactured in the workshops of « gold finger », Marcel Lachat (Alle, Swiss Jura.) Ø 30.05 mm, height 6,7 mm ; 23 rubies, numbered movement, decorated « Côtes de Genève » style, with circular motives, stippling « perlage » of the bottom plate and the bridges, blued screws, ten working days tests phase in five different positions : HH, HB, VD, VG, et VB. Oscillations : 21600 per hour. 44 hours power reserve..
• Special features : Available in both central hands and regulator versions, with enamelled dials, silver or deep grey, with silver indexes.