---
product_id: 490239919
title: "Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel"
brand: "seiko"
price: "A$555"
currency: AUD
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.au/products/490239919-seiko-spb121-prospex-mens-watch-brown-39-5mm-stainless-steel
store_origin: AU
region: Australia
---

# 70-hour power reserve Magnified date window Screw-down crown for water resistance Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel

**Brand:** seiko
**Price:** A$555
**Availability:** ✅ In Stock

## Summary

> ⌚ Elevate your wrist game with Seiko’s blend of precision and prestige!

## Quick Answers

- **What is this?** Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel by seiko
- **How much does it cost?** A$555 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/490239919-seiko-spb121-prospex-mens-watch-brown-39-5mm-stainless-steel)

## 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

- • **Secure & Sleek:** Screw-down crown ensures durability and water resistance for your active lifestyle.
- • **Luminous Leadership:** LumiBrite hands and markers glow bright, keeping you ahead even in the dark.
- • **Endurance Meets Elegance:** 70-hour power reserve keeps you on time through every hustle.
- • **Timeless Style Statement:** Green sunray dial with gold accents and rotating bezel—because your wrist deserves the spotlight.
- • **Precision in Every Detail:** Magnified date window offers effortless readability at a glance.

## Overview

The Seiko SPB121 Prospex Men's Watch features a robust 39.5mm stainless steel case, a 70-hour automatic power reserve, and a screw-down crown for enhanced water resistance. Its green sunray dial with gold accents is complemented by LumiBrite hands and markers for superior visibility. The watch also includes a magnified date window and a rotating bezel, all secured by a tri-fold clasp with push-button release, making it a perfect fusion of style, durability, and functionality for the modern professional.

## Description

- Automatic Winding Capability - Magnified Date Window - LumiBrite Hands and Markers - Green Dial with Sunray Finish and Gold Accents - Rotating Bezel - Tri-Fold Clasp with Push Button Release

Review: Sin palabras 10/10. Aunque, luce un poco mas pequeño de lo que uno creeria segun las specs de 39.5mm de diametro total ya que el marco exterior de acero mas el bizel giratorio interno de la brujula le quita tamaño real a la caratula del reloj midiendo apenas 28mm máximo.
Review: Love love love this watch! It is gorgeous. The sapphire crystal, the cathedral hands, the cyclops calendar, the green dial, the gold numerals, the super shiny bezel and lugs are all outstanding. The brown leather watch band is very secure with a locking closure and two tips at the front and the back of the bracelet for extra security. I have a very small wrist and this fit very well. This watch is only 1.5 mm larger than my Bulova field watch but does not look bigger. It, however, is more prominent on my wrist because of its height. The band fits much better than any other watch manufacture band. I read complaints about the band but with exception of the color, I don't wear much brown, I love it. The shipping was fast. I received it a day early. It was a great price for a great watch. Thank you Wristoutlet.

## Features

- Screw-down crown, screw, see-through caseback, 70 hour power reserve, magnified date window, LumiBrite hands and markers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0B33H4V74 |
| Customer Reviews | 4.6 4.6 out of 5 stars (88) |
| Date First Available  | 12 June 2022 |
| Department  | mens |
| Generic Name  | watch |
| Item Dimensions LxWxH  | 12.7 x 12.7 x 10.2 Centimeters |
| Item Weight  | 472 g |
| Item model number  | SPB121 |
| Manufacturer  | Seiko |
| Product Dimensions  | 12.7 x 12.7 x 10.16 cm; 471.74 g |

## Images

![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 1](https://m.media-amazon.com/images/I/41Q-qMVHxoL.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 2](https://m.media-amazon.com/images/I/41fLBAYrAOL.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 3](https://m.media-amazon.com/images/I/511Tf+w8h+L.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 4](https://m.media-amazon.com/images/I/516+gulAmdL.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 5](https://m.media-amazon.com/images/I/51zEOSjdhnL.jpg)

## Questions & Answers

**Q: How can I be sure of that is original watch?**
A: I don’t believe they are making knock offs of a watch under a 1000.00 dollars

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***N on 2 December 2025*

Sin palabras 10/10. Aunque, luce un poco mas pequeño de lo que uno creeria segun las specs de 39.5mm de diametro total ya que el marco exterior de acero mas el bizel giratorio interno de la brujula le quita tamaño real a la caratula del reloj midiendo apenas 28mm máximo.

### ⭐⭐⭐⭐⭐ Review
*by E***B on 24 December 2025*

Love love love this watch! It is gorgeous. The sapphire crystal, the cathedral hands, the cyclops calendar, the green dial, the gold numerals, the super shiny bezel and lugs are all outstanding. The brown leather watch band is very secure with a locking closure and two tips at the front and the back of the bracelet for extra security. I have a very small wrist and this fit very well. This watch is only 1.5 mm larger than my Bulova field watch but does not look bigger. It, however, is more prominent on my wrist because of its height. The band fits much better than any other watch manufacture band. I read complaints about the band but with exception of the color, I don't wear much brown, I love it. The shipping was fast. I received it a day early. It was a great price for a great watch. Thank you Wristoutlet.

### ⭐⭐⭐⭐⭐ Review
*by W***N on 24 May 2025*

Excelente produto e vendedor!! Fiquei surpreso com a beleza do relógio e a excelente logística da Amazon. O produto chegou muito mais rápido que o esperado!

## Frequently Bought Together

- Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel
- Bergeon 4040 Extensible and reversible movement holder Watchmaker Tools
- BERGEON 8008 Rubber Ball to Open and Close case Backs Ø65 mm, black,white, Open

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-25*