ETA caliber Powermatic 80.611

ETA caliber Powermatic 80.611 (base ETA caliber 2824-2) | Automatic | 25.6 mm (11½ lignes) | Thickness: 4.6 mm | Frequency: 21,600 vph (3 Hz) | Jewels: 25 | Nivachron balance spring | Hours, minutes, seconds, date | Power reserve: 80 hours

.

This movement is also known as the ETA caliber 80.611, often used by Certina, Hamilton (with another name) and Tissot (also with another name). And other brands within the Swatch Group to which ETA belongs.

.

The ETA 80.611 has a Nivachron balance spring, a titanium-based alloy that is non-magnetic. It is also resistant to temperature variations (normal wearing conditions) and shocks in normal wearing conditions.

.

Variants of the ETA 80.611 (or ETA caliber C07.611)

.

It seems, but this is not conformed, that the C07 calibers have a basic finish and less expensive materials while the Powermatic 80 calibers have better materials and a higher level of finish. The main differences between the variants are:

.

• ETA caliber Powermatic 80.1XX / C07.1XX with a synthetic escapement
• ETA caliber Powermatic 80.6XX / C07.6XX with a Nivachron balance spring
• ETA caliber Powermatic 80.8XX / C07.8XX with a silicon hair spring

.

The XX is a number that indicates possible complications like small seconds, date, GMT, and more. Here, the 80.611 indicates a three-hander with central seconds and a date.

.

Watches with the ETA caliber Powermatic 80.611