What is a Seiko Automatic watch?
A Seiko Automatic watch is not the same as a Seiko Kinetic watch. A Seiko Automatic is a mechanical wristwatch with a self-winding mechanism. In other words, one does not have to wind the crown periodically to keep the watch running. A manual or manual wind watch must be wound by hand, using the crown, usually every day, to operate continuously.
All self-winding watches work on the principle of converting arm motion (kinetic energy) into the winding of the mainspring (potential energy). Usually, this is performed by a half-disc of metal weighted at the edge called a rotor, which spins when the wearers arm is accelerated unpredictably (that is, when moved normally in the course of everyday life). This rotary motion is then geared down to wind the central arbor of the mainspring.
COLLECTABLE VINTAGE SEIKO 6319-5190 AUTOMATIC MEN WATCH
$26.00 (3 Bids) Time Left: 16m |
| SEIKO 5 Automatic SNKA21K1 21 Jewels Watch SNKA21 Blue
$52.99 
Time Left: 20m |
| COLLECTABLE VINTAGE SEIKO 7009-5861 AUTOMATIC MEN WATCH
$26.00 (4 Bids) Time Left: 21m |
| SEIKO 5 Automatic SNK361K1 21 Jewels Watch SNK361
$52.99
Time Left: 21m |
| SEIKO 5 Automatic SNK355K1 21 Jewels Watch SNK355
$52.99
Time Left: 22m |
| SEIKO SNK663K1 SNK663 Automatic Watch 21 Jewels
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Time Left: 23m |
| SEIKO 5 AUTOMATIC MEN STAINLESS STEEL SNKD97K WR 30m
$89.95
Time Left: 24m |
| SEIKO 5 Automatic SNKE53K1 21 Jewels Watch SNKE53
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Time Left: 24m |
| SEIKO 5 Automatic SNKE61K1 21 Jewels Watch SNKE61
$52.99
Time Left: 25m |
| Seiko 5 Sports Automatic 100m Watch SNZG65 SNZG65J1
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Time Left: 25m |
| Seiko 5 Men's Automatic Black Dial Watch 7S26 Movements
$32.00 (23 Bids) Time Left: 31m |
| SEIKO 5 Automatic SNK613K1 21 Jewels Watch SNK613
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Time Left: 32m |
| SEIKO 5 Automatic SNKE49K1 21 Jewels Watch SNKE49
$52.99
Time Left: 34m |
| SEIKO SNK807 SNK807K2 ARMY Military Automatic Watch
$52.99
Time Left: 36m |
| SEIKO SNK803 SNK803K2 ARMY Military Automatic Watch NEW
$52.99
Time Left: 37m |
| SEIKO SNK809 SNK809K2 ARMY Military Automatic Watch
$52.99
Time Left: 37m |
