No products in the cart.
Return To ShopWatch Database
ETA 640
Ligne: 8.75 x 12'''
Jewels: 15
Power Reserve: 50 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1930
Size: 19.95 x 26.85 mm
Height: 3.4 mm
Hands: 1.40 x 0.65 / 0.20 mm
The ETA 640 is a mechanical watch movement with manual wind functionality and sub-second display. This movement was commonly used in watches around the 1930s. The specific differences between the ETA 640 and other similar movements remain unknown.
The ETA 640 features the following functions:
- Manual Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.110 x 400 x 11.0 mm | Manual | Buy mainspring | |
| 1.30 x 0.110 x 400 x 11.0 mm | GR3288 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|
All watch database content © EmmyWatch LLC. Unauthorized redistribution of content is strictly prohibited. All rights are reserved.
