ETA Caliber 2824-2 VS 2804-2

What is the difference between ETA caliber 2824-2 and 2804-2?

Both of these calibers are mechanical movements, but the main difference between them is that the ETA 2824-2 is an automatic and the 2804-2 is a manual-wind movement.

Any other differences?

Yes. Although the ETA caliber 2824-2 is essentially the automatic version of the ETA 2804-2 manual-wind movement, there are some other differences between the two. Let’s compare the differences below:

Height

The ETA 2804-2 is 3.35mm VS the 2824-2 at 4.6mm. The difference in height is due to the automatic wind unit on the 2824-2, making it a taller movement.

Jewels

The 2804-2 has 17 jewels and the 2824-2 has 25 jewels. Again, this is do to the addition of the automatic device framework.

Power Reserve

Caliber 2804-2 has a running time of about 42 hours when fully wound. The automatic 2824-2 has a running time of about 38 hours.

What about similarities?

The main specs that the ETA 2824-2 has in common with the 2804-2 are as follows:

• Linges: 11.5”’
• Diameter: 25.6mm
• Hands: Both have central hours, minutes, and seconds
• Features: Both have a date at 3:00
• Vibrations Per Hour: 28,800 bph
• Lift Angle: 50 degrees
• Dial Feet Location: Same

Additionally, both movements are hand-windable and equipped with a hacking stop-seconds mechanism. Both use an Etachron regulator. Both use Incabloc anti-shock devices.

Dial Side Compared:

Additional Resources:

• ETA caliber 2824-2
• ETA caliber 2804-2