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Home/Browse/Seiko/Alpinist
Seiko Prospex Land Mechanical
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Seiko Alpinist

Field

Owners widely praise the Seiko Prospex Land Mechanical for its durability, accuracy, and value, with many appreciating its versatile style and useful day-date complication. Some owners highlight the 70-hour power reserve and 20 bar water resistance as significant benefits. However, opinions are divided on its size and thickness, with some finding it too large and heavy for a field watch, while others consider it a perfect or comfortable fit, especially at 38mm. There is also disagreement regarding the crystal type, with some criticizing the Hardlex while others appreciate the sapphire. Overall, owners rate the Seiko Prospex Land Mechanical highly for its robust performance and good value, despite differing views on its dimensions.

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Alpinist
Baby Alpinist
Prospex Land Mechanical
Prospex Land Mechanical GMT
Prospex Land Seiko Boutique exclusive model
2 Variants
Lume:LumiBrite on hands and index(es)
Buy from Seiko ↗
Buy used on eBay ↗
Retail MSRP
$750
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Alternatives
Case
39.5mm
Power Reserve
70h
Movement
Automatic
Water Resistance
200m
Crystal
Sapphire + AR
01

Case Dimensions

Diameter39.5mm
Thickness13.2mm
Lug-to-Lug46.4mm
Lug Width20mm
02

Case Build

MaterialStainless Steel
Water Resistance200m
03

Crystal & Dial

CrystalSapphire
AR CoatingAnti-reflective coating on inner surface
LumeLumiBrite on hands and index(es)
04

Movement

Caliber
Seiko 6R35
TypeAutomatic
Beat Rate—
Power Reserve70 hours
Jewels24
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleMatte
BezelFixed
Bracelet / strapLug-attached bracelet
HandsBaton
AI-detected from product image · 5/22/2026
In a nutshell

The Seiko Alpinist is an automatic field watch, with a 39.5mm stainless steel case, 13.2mm thick, powered by the Seiko 6R35 movement and a 70-hour power reserve. Water resistance is rated to 200m, under a sapphire crystal. Manufacturer MSRP is $750.

Popular comparisons

The matchups people make with the Seiko Alpinist most — open one to see it side by side.

Seiko AlpinistvsVaer Swiss→Seiko AlpinistvsPhoibos Apollo Dlc→Seiko AlpinistvsHamilton Khaki Field Auto→Seiko AlpinistvsTudor Ranger→
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