---
product_id: 339715980
title: "Seiko Prospex\"Alpinist\" Compass Green Dial Sapphire Glass Leather Watch for Men SPB121J1"
brand: "seiko"
price: "¥2102"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/339715980-seiko-prospexalpinist-compass-green-dial-sapphire-glass-leather-watch-men
store_origin: JP
region: Japan
---

# Sapphire crystal glass 70-hour power reserve Rotating compass inner ring Seiko Prospex"Alpinist" Compass Green Dial Sapphire Glass Leather Watch for Men SPB121J1

**Brand:** seiko
**Price:** ¥2102
**Availability:** ❌ Out of Stock

## Summary

> 🧭 Navigate your style with the iconic Seiko Alpinist – where heritage meets modern adventure.

## Quick Answers

- **What is this?** Seiko Prospex"Alpinist" Compass Green Dial Sapphire Glass Leather Watch for Men SPB121J1 by seiko
- **How much does it cost?** ¥2102 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/339715980-seiko-prospexalpinist-compass-green-dial-sapphire-glass-leather-watch-men)

## Best For

- seiko enthusiasts

## Why This Product

- Trusted seiko brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Elegance:** Scratch-resistant sapphire crystal for lasting clarity
- • **Robust Engineering:** Screw-down crown and case back ensure water resistance and durability
- • **Luminous Visibility:** LumiBrite hands and indexes glow bright in low light
- • **Seamless Timekeeping:** Stop seconds hand function for precise time setting
- • **Adventure-Ready Precision:** Rotating compass ring for on-the-go navigation

## Overview

The Seiko Prospex 'Alpinist' SPB121J1 is a modern automatic field watch inspired by the 1959 original, featuring a 70-hour power reserve, scratch-resistant sapphire crystal, and a rotating compass inner ring. Designed for durability and precision, it includes LumiBrite hands for visibility, a screw-down crown for water resistance, and a stop seconds hand function for accurate time setting—perfect for the discerning adventurer and style-conscious professional.

## Description

The Seiko Prospex "Alpinist" SPB121J1 (often referred to as the "Fieldmaster" or simply the new Alpinist) is a popular, modern automatic field watch designed for durability and, specifically, mountaineering. It is a contemporary reimagining of the original 1959 Seiko Laurel Alpinist, featuring upgraded specifications like a longer power reserve and sapphire crystal.

## Features

- LumiBrite on hands and index(es)
- Rotating compass inner ring
- Screw-down crown
- See-through & Screw case back
- Stop seconds hand function

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B083H6FJ5S |
| Batteries  | 1 Unknown batteries required. (included) |
| Best Sellers Rank | #162,283 in Fashion ( See Top 100 in Fashion ) #4,255 in Men's Wrist Watches |
| Customer reviews | 4.4 4.4 out of 5 stars (107) |
| Date First Available  | 20 January 2020 |
| Department  | Mens |
| Is Discontinued By Manufacturer  | No |
| Item model number  | SPB121J1 |
| Manufacturer  | Seiko |
| Product Dimensions  | 15 x 10 x 5 cm; 2 g |

## Images

![Seiko Prospex"Alpinist" Compass Green Dial Sapphire Glass Leather Watch for Men SPB121J1 - Image 1](https://m.media-amazon.com/images/I/41O68XA+2bL.jpg)
![Seiko Prospex"Alpinist" Compass Green Dial Sapphire Glass Leather Watch for Men SPB121J1 - Image 2](https://m.media-amazon.com/images/I/618jnYT67KL.jpg)

## Questions & Answers

**Q: What is the extra button/stem for?**
A: It’s for the compass. Bought this watch in April and love it .

**Q: Replacer original band available? Size for replacement 2nd question? Thank you for the help .**
A: Hello,

We have new original bands available. 

Please directly contact us if you'd like to purchase a new original strap.

Best regards,

Golden Time Jewelers
Seiko Authorized Dealer

**Q: Automatic? Description say quartz movement.**
A: Automatic and hand-winding movement with a hacking function, amazon controls the content and might stands to be updated.

**Q: Is the inner, rotating bezel/compass black or green?**
A: Hello,

It's green.

Best regards,

GTJ

## Frequently Bought Together

- Seiko Prospex"Alpinist" Compass Green Dial Sapphire Glass Leather Watch SPB121J1
- Barton Quick Release - Top Grain Leather Watch Band Strap - Choice of Width - 16mm, 18mm, 19mm, 20mm, 21mm 22mm, 23mm or 24mm
- SEIKO Automatic Watch for Men - Presage Cocktail Time - Patterned with Golden Numerals and Date Calendar, 50m Water-Resistant

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**Shop now:** [https://www.desertcart.jp/products/339715980-seiko-prospexalpinist-compass-green-dial-sapphire-glass-leather-watch-men](https://www.desertcart.jp/products/339715980-seiko-prospexalpinist-compass-green-dial-sapphire-glass-leather-watch-men)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-11*