MOVEMENTS

	The heart of a Certina Since 1888, Certina has maintained an enviable reputation for its excellent watches and reliable movements. From the time of its integration into the SMH (today's Swatch Group) in the early 1980s, every Certina has been equipped with a high-quality ETA movement.
	Quartz, good vibrations inside and out In a quartz watch movement, high-frequency oscillations are generated in a tiny synthetic crystal, then divided down electronically to provide the extreme accuracy of the Certina internal clock. A battery supplies the necessary energy. The quartz movement is sometimes equipped with an end-of-life (EOL) indicator. When the seconds hand begins moving in four-second increments, the battery should be replaced within two weeks.
	Automatic movements Most automatic movements are driven by an offset rotor. Arm and wrist movements spin the rotor, which in turn winds the main spring, eliminating the need for a battery. Precision depends upon rigorous manufacturing and the original calibration of the movement, as well as the lifestyle of the wearer.

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