A. Lange & Sohne 1815 1815 BrandA. Lange & Sohne Collection1815 Model1815 Reference233.025 Country of originGermany Type of watchMen's Case materialPlatinum Case diameter40 mm Case thickness8.9 mm Power reserve55 hours Limited to500 pieces Limited editionManual windingHoursMinutesSecondsTransparent casebackWristwatch