Bergeon 2729-ETA-03 Mainspring Winder for ETA 2660, 2671, 2678, 2688 The Bergeon 2729-ETA-03 is a precision mainspring winder designed specifically for use with ETA movements, including the popular ETA 2660, 2671, 2678, and 2688 models. This high-quality tool is essential for any serious watch enthusiast or professional Swiss watchmaker. Key Features Specifically designed for ETA movements (2660, 2671, 2678, 2688) High-precision mainspring winder for accurate winding and setting Durable construction with high-quality materials for long-lasting performance Specifications Movement compatibility: ETA 2660, 2671, 2678, 2688 Winding capacity: [Insert winding capacity] Weight: [Insert weight] Additional Information To use the Bergeon 2729-ETA-03, you will also need the Bergeon 30082-M mainspring winder handle tool. This is a crucial accessory for any ETA movement owner or Swiss watchmaker looking to maintain and repair their timepieces. UPC: 5052923006947