Caliber MHUB1710 Self-winding Time Only MHUB1280 Unico ManufactureFunctions Self-winding chronograph flyback movement not in the Time Only
link which is time onlyPower Reserve 50 hours Time
link Only 72 hours Winding Both models are self-windingFrequency 4 Hz both models Jewels 27 Time Only
link 43