Tissot’s Luxury Automatics Offer 80-Hour Power Reserve
Fans of affordably priced Swiss mechanicals may want to take a close look at the new Tissot Luxury Automatic COSC collection, which includes the first Swiss watches to contain the new caliber nicknamed Powermatic 80, an automatic movement with COSC chronometer certification and an 80-hour power reserve.The Powermatic 80 is the product of a collaboration between Tissot and the movement manufacturer ETA, Tissot’s sister company within the Swatch Group. To achieve its unprecedented lengthy power reserve (most comparable movements offer power reserves around 42 hours), its inventors developed a system that strongly reduces the consumption of energy. The oscillation frequency was reduced from 4 Hz to 3 Hz (21,600 vph), a high-performance synthetic material was used in the escapement to reduce friction. Also, the diameter of the barrel-arbor’s core was reduced, which enabled the mainspring to be stretched, thereby increasing the power reserve. The balance was also regulated in a

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