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Seiko 5605A
Ligne: 13'''
Power Reserve: 38 hrs
Frequency: 18000 vph
Type: Automatic
Period used: ~1978
Diameter: 29.45 mm
Height: 6.4 mm
Hands: 1.38 x 0.90 x 0.16 / 0.21 mm
The Seiko 5605A watch movement utilizes a pin-lever escapement and features a sophisticated excenter self-winding mechanism with just one gear stage. The excenter on the rotor arbor operates a lever, which in turn rotates a ratchet wheel through two clicks. On the dial side, a planet differential gear transmits the combined power from both automatic and manual winding to the barrel arbor via two planet wheels. This implementation allows for different gear ratios and ensures effective decoupling of the two winding sources. The movement is equipped with automatic winding, sweep second function, and was used during the period around 1978.
The Seiko 5605A features the following functions:
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.100 x 10.0 mm | Auto | 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 |
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