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Seiko 4N20-0100
The Seiko 4N20-0100 is an automatic watch movement.
The Seiko 4N20-0100 features the following functions:
- Automatic chronograph
- Automatic chronograph with date
- Automatic chronograph with day/date
- Automatic chronograph with flyback feature
- Automatic chronograph with GMT Complication
- Automatic chronograph with moon phase
- Automatic chronograph with perpetual calendar
- Automatic chronograph with split-seconds function
- Automatic chronograph with tachymeter scale
- Automatic chronograph with world time indication.
- Automatic tourbillon
- Automatic tourbillon with calendar
- Automatic tourbillon with GMT Complication
- Automatic tourbillon with moon phase
- Automatic tourbillon with perpetual calendar
- Automatic Winding
- Automatic with date
- Automatic with Power Reserve Display
- Hand-wound with date
- Hand-wound with Power Reserve Display
- Manual Winding
- Manual winding with hacking seconds
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.50 x 0.105 x 260 x 9.0 mm | GR4132X | 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 |
|---|---|---|---|
| PALLET ARBOR | 72S/94P | 714/ETA 1051 | Buy part |
| RIVET | 100/1369 | Buy part | |
| ROLLER, 180X90X36 | 82S/43R | Buy part | |
| STEM, TAP 10 | 200/126F | Buy part |
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