ISA Caliber 238/103 Quartz Movement Technical File
Technical specifications and dimensional reference file for the ISA caliber 238/103 quartz movement, a compact 8 3/4-line electronic stepping motor mechanism measuring 19.40 mm in diameter and 1.90 mm in height. This three-hand date quartz movement is fitted with 6 jewels, incorporates a rotary stepping motor, battery end-of-life signal detection, and rapid date correction function. The file provides complete dimensional drawings and tolerance specifications for the cage, dial, hand fitting, and movement fastening interfaces. The SR 716 SW battery operates at 1.55V with 21 mAh capacity, delivering approximately 40 months of autonomy under normal conditions. Rated for operation between 0 and 50°C, the movement draws 0.73 µA at 1.55V. Essential reference for watchmakers, technicians, and service centers requiring precise technical data and assembly tolerances for this caliber.
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 5
- Size
- 482.0 KB
- Category
- Watchmaking