Ronda 785Li Quartz Movement Technical Instructions No. 305.5 - Supplement
Technical supplement No. 305.5 to the Ronda 785Li quartz movement instruction manual No. 304, covering the 8 3/4 caliber. Provides complete assembly diagram with annotated parts list for service and repair reference. Movement dimensions specified at Ø 20.00 mm case and 19.40 mm encage. Electrical specifications include 3.00 V battery requirement, 0.5 µA power consumption, 6.0 THz operating frequency, 385-minute power reserve, and autonomy exceeding 10 years. CR 1616 battery dimensions: 16.00 × 1.60 mm. Technical checks cover battery voltage validation, current consumption measurement, coil resistance testing, and operating parameter verification across 0–50 °C temperature range with 91-10 shock resistance rating. Essential reference for watchmakers performing service procedures, maintenance, and troubleshooting on this movement.
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