Movement
A mechanical movement wound by a weighted rotor as your wrist moves. Most of our Seikos run on one. Older calibers like the 6309 and the SKX's 7S26 can't be wound by hand or hacked, while the later 4R36 can do both.
20 references we cover.

Seiko · SKX Diver
Diveref SKX007
$370–$625 typical ask
124 on eBay

Seiko · SKX Diver
Diveref SKX009
$390–$525 typical ask
153 on eBay

Seiko · SKX Diver
Diveref SKX013
$470–$1,100 typical ask
26 on eBay

Seiko · SKX Diver
Diveref SKX173
$300–$480 typical ask
10 on eBay

Seiko · Vintage Diver
Diveref 6309-7290
$410–$800 typical ask
32 on eBay

Seiko · Vintage Diver
Diveref 6309-7040
$675–$975 typical ask
44 on eBay

Seiko · Vintage Diver
Diveref 7002-700A
$360–$440 typical ask
16 on eBay

Seiko · Vintage Diver
Diveref 6105-8110
$2,200–$2,725 typical ask
69 on eBay

Seiko · Prospex Diver
Diveref SRP777
$750–$875 typical ask
6 on eBay

Seiko · Monster Diver
Diveref SKX781
$420–$575 typical ask
106 on eBay

Seiko · Vintage Chronograph
Chronographref 6139-6002
$750–$1,175 typical ask
144 on eBay

Seiko · Vintage Chronograph
Chronographref 6138-0040
$800–$1,425 typical ask
77 on eBay

Seiko · Vintage Chronograph
Chronographref 6138-8039 (US market)
$925–$1,200 typical ask
17 on eBay

Seiko · Seiko 5
Fieldref SNK809
$230–$380 typical ask
90 on eBay

Seiko · Seiko 5
Dressref 6119 caliber, many case refs
$200–$340 typical ask
224 on eBay

Seiko · Bell-Matic
Dressref 4006 caliber, many case refs
$360–$525 typical ask
230 on eBay

Seiko · Seiko Mechanical (Spirit)
Dressref SARB033
$800–$1,150 typical ask
84 on eBay

Seiko · Seiko Mechanical (Spirit)
Dressref SARB035
$1,175–$1,425 typical ask
30 on eBay

Seiko · Presage Cocktail Time
Dressref SRPB43
$440–$650 typical ask
8 on eBay

Seiko · Seiko 5 Sports
Fieldref SRPD55
$280–$390 typical ask
60 on eBay