ETA Unitas Caliber 6498-1 VS. 6498-2

What is the difference between caliber 6498-1 and 6498-2?

There are two variations of the ETA/Unitas 6498 including the 6498-1 and 6498-2. The -1 beats at 18,800vph while the -2 beats at 21,600vph and is COSC. The -2 typically costs more.

Part Interchangeability

There are some differences in parts as well. This was outlined by lysanderxiii on wus:

The -2s (operating at 21,600 bph) have the following interchangeable with the slower -1s:

• Pallet Bridge
• Stem
• Sliding Pinion
• Winding Pinion
• Crown Wheel Ring
• Click Spring
• Yoke Spring
• Setting Wheel
• Intermediate Setting Wheel
• Case screw

Have you noticed any other differences? Please comment below.

• Caliber 6498-1 examples and specs
• Caliber 6498-2 examples and specs
• Further Reading: Difference between caliber 6497 VS 6498