Black Dial Tantalum

Specifications

Movement

• Design : Developed in collaboration with the Vallée de Joux watch manufacturer.
• Reassembly : Manual.
• Dimensions : 13 1/4 lines (30 mm diameter), 3.90 mm thick.
• Ruby : 26.
• Frequency : 28,800 vibrations per hour (4 Hz).
• Accuracy : Adjustment to -4/+6 seconds per day.
• Power reserve : 120 hours (5 days).
• Functions : Indication of central hours, minutes and seconds.
• Engraving : Mountain altitude lines filled with SuperLuminova BGW9.
• Finish : Sunburst decoration starting from the center of the movement.
• Certification : Officially certified chronometer (ISO 3159), 100% Swiss Made.

Housing

• Construction : Three-part assembly (bezel, central body, back), fully screwed.
• Dimensions : 40 mm diameter, 9.4 mm thickness (including glass), 46 mm lug to lug length.
• Material : Tantalum, renowned for its durability and distinct hue.
• Finish : Sandblasted case with matte bezel and polished details.
• Lug width : 20 mm.
• Glass : Sapphire with anti-reflective treatment on the internal side.
• Case back : Screw-down sapphire crystal case back with anti-reflective treatment.
• Water resistance : 100 meters (10 ATM).
• Crown : Tantalum with engraved HP logo.