Description
The Alpina Alpiner Chronograph AL-750SG4E6 represents the pinnacle of Swiss watchmaking precision, combining centuries-old traditions with modern horological innovations. This detailed analysis explores every aspect of this remarkable timepiece, from its technical specifications to its practical applications.
Heritage and Brand History
Alpina, founded in 1883 by Gottlieb Hauser, has been at the forefront of Swiss watchmaking innovation for over 130 years. The Alpiner collection, introduced in 1938, represents the brand’s commitment to creating robust sports watches.
Design Elements
Case Architecture
The case construction features:
- Diameter: 41.5mm precision-engineered case
- Thickness: 14.2mm for optimal balance
- Lug-to-lug distance: 51mm for enhanced wrist comfort
- Lug width: 20mm with curved lugs for ergonomic fit
- Material: 316L surgical-grade stainless steel
- Finishing: Alternating brushed and polished surfaces
- Bezel: Fixed stainless steel with tachymeter scale
Crystal and Caseback
- Front crystal: 2.2mm thick scratch-resistant sapphire
- Anti-reflective coating: Double-sided treatment
- Exhibition caseback: Sapphire crystal with metallized Alpina logo
- Gasket system: Triple-sealed for water resistance
Dial Construction
The multi-layered dial features:
- Base layer: Silvered sunburst finish
- Applied indices: Rose gold-plated with diamond-cut edges
- Chronograph subdials: Circular-grained finish
- Hand-finished applied Alpina logo at 12 o’clock
- Date window with beveled frame at 6 o’clock
Movement Specifications
AL-750 Caliber Details
Technical specifications include:
- Base movement: Modified SW500 chronograph caliber
- Diameter: 30mm (13¼ lignes)
- Height: 7.9mm
- Number of components: 301
- Jewel count: 25 synthetic rubies
- Balance frequency: 28,800 vph (4 Hz)
- Power reserve: 46 hours ±2
Movement Finishing
- Côtes de Genève decoration on bridges
- Perlage on mainplate
- Blued screws
- Custom Alpina rotor with Geneva stripes
- Rhodium-plated components
Chronograph Functions
Timing Capabilities
The chronograph mechanism offers:
- Central chronograph seconds: 1/4 second precision
- 30-minute counter at 12 o’clock position
- 12-hour counter at 6 o’clock position
- Small seconds at 9 o’clock with hacking feature
- Column wheel activation system
- Vertical clutch engagement
Strap and Bracelet Details
Leather Strap Specifications
- Material: Premium Tuscan calfskin leather
- Construction: Hand-stitched with reinforced lining
- Thickness: 3.5mm tapering to 2.8mm
- Width: 20mm at lugs, 18mm at buckle
- Padding: Medium-firm with water-resistant treatment
Buckle System
- Type: Pin buckle in matching stainless steel
- Finishing: Brushed with polished edges
- Security: Double-pronged design
- Branding: Engraved Alpina logo
Technical Specifications
Water Resistance
- Rated to 100 meters (10 ATM)
- Triple gasket crown system
- Pressure-tested case construction
- Screw-down crown with position indicator
Luminescence
- Super-LumiNova® C1 on hands and indices
- Custom-formulated luminescent compound
- Extended glow duration: 6+ hours
Practical Considerations
Daily Wear
The watch offers several practical advantages:
- Balanced weight distribution: 150g including strap
- Shock resistance: Incabloc shock protection system
- Magnetic resistance: Up to 4,800 A/m
- Power reserve indicator: Visual marker system
Maintenance Requirements
To maintain optimal performance:
- Full service interval: 4-5 years
- Water resistance testing: Annual
- Chronograph function check: Semi-annual
- Strap replacement: Every 12-18 months
Investment Value
The AL-750SG4E6 represents significant value in the luxury watch market:
- Limited annual production numbers
- Full manufacturer warranty coverage
- Strong secondary market presence
- Documented service history system
Certification and Authentication
Each timepiece comes with:
- Individual serial number registration
- Swiss chronometer certification (optional)
- Authentication papers
- Digital warranty card
