Seiko

Prospex Alpinist

Ref. SPB117J1 · 39.5mm · Automatic · Stainless steel · MSRP $750.00

Market research

Authorized dealer

Asking $750–$750

full set · cross_verified

No suggested buy/sell -- retail price only.

Sources: Original MSRP $750, matches catalog exactly

Grey market

Asking $670–$670

full set · single_source

No suggested buy/sell -- discount-retail price only.

Sources: Jomashop $669.99

Secondary / used

Asking $570–$770

Suggested buy ~$570 · sell ~$720

full set · cross_verified

Trades at a modest discount from MSRP, consistent with typical Seiko Prospex secondary-market behavior.

Sources: Chrono24 aggregate average ~$650, range $570-770

Spec

Diameter
39.5mm
Lug width
20mm
Movement
Automatic
Caliber
6R35
Case material
Stainless steel
Crystal
Sapphire
Dial color
Black
Water resistance
200m
Power reserve
70h
Jewels
24
Strap/bracelet
Strap
Strap material
Leather

Source note

Cross-verified via SeriousWatches, Gem Bijou, StrapSeeker, Seiko Luxe, seikousa.com for this exact reference. Internal rotating compass bezel is a distinctive Alpinist feature. strap_material (leather) is the well-documented stock configuration, not independently re-confirmed with a fresh source here.