---
product_id: 446575930
title: "Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel"
brand: "seiko"
price: "€ 1490.96"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.pt/products/446575930-seiko-spb121-prospex-mens-watch-brown-39-5mm-stainless-steel
store_origin: PT
region: Portugal
---

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

**Brand:** seiko
**Price:** € 1490.96
**Availability:** ✅ In Stock

## Summary

> ⌚ Elevate your wrist game with Seiko’s Prospex – where precision meets prestige.

## Quick Answers

- **What is this?** Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel by seiko
- **How much does it cost?** € 1490.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/446575930-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

- • **Luminous Precision:** LumiBrite hands and markers ensure clarity in any light.
- • **Dive-Ready Durability:** Screw-down crown and 200m water resistance for fearless adventures.
- • **Timeless Transparency:** See-through caseback reveals the intricate automatic movement.
- • **Endurance Meets Elegance:** 70-hour power reserve keeps you on time through every hustle.
- • **Signature Style Statement:** Green sunray dial with gold accents and a secure brown leather strap for standout sophistication.

## Overview

The Seiko SPB121 Prospex is a 39.5mm stainless steel automatic watch featuring a 70-hour power reserve, screw-down crown, and 200m water resistance. It boasts a green sunray dial with gold accents, LumiBrite hands and markers, a magnified date window, and a see-through caseback, all secured by a brown leather strap with a tri-fold push-button clasp. Designed for professionals who demand style and reliability in every moment.

## 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: Hermoso reloj y a super precio, valió la pena la espera
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 |
| ASIN  | B0B33H4V74 |
| Age Range Description | Adult |
| Band Color | Brown |
| Band Material Type | Stainless Steel |
| Band Width | 20 |
| Bands | 1 |
| Best Sellers Rank | #259,376 in Fashion ( See Top 100 in Fashion ) #6,574 in Men's Wrist Watches |
| Brand Name | Seiko |
| Case Diameter | 39.5 Millimeters |
| Case Material Type | Stainless Steel |
| Case Thickness | 13 Millimeters |
| Character | Fashion |
| Clasp Type | Tri-fold clasp with push button release |
| Closure Type | Buckle |
| Crystal | Mineral Glass |
| Customer Reviews | 4.7 4.7 out of 5 stars (103) |
| Customer reviews | 4.7 4.7 out of 5 stars (103) |
| Date First Available  | 12 June 2022 |
| Department  | mens |
| Dial Color | Green |
| Display | Analog |
| Embellishment Feature | Crystal |
| Face Style | [OTHER] |
| Included Components | Watch Band |
| Item Weight | 0.47 Kilograms |
| Item model number  | SPB121 |
| Manufacturer | Seiko |
| Manufacturer  | Seiko |
| Model Name | SPB121 |
| Model Number | SPB121 |
| Pattern | Sunray |
| Power Source | Automatic |
| Product Dimensions  | 12.7 x 12.7 x 10.16 cm; 472 g |
| Series Number | 121 |
| Shape | Round |
| Sport Type | Walking |
| Strap Type | Leather |
| Style Name | Modern |
| UPC | 029665200730 |
| Watch Movement Type | Automatic |
| Water Resistance Depth | 200 Meters |
| Water Resistance Level | Waterproof |

## Images

![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 1](https://m.media-amazon.com/images/I/61CWhZouXiL.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 2](https://m.media-amazon.com/images/I/516+gulAmdL.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 3](https://m.media-amazon.com/images/I/61F-MdkwYtL.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 4](https://m.media-amazon.com/images/I/712UUWkmJHL.jpg)
![Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel - Image 5](https://m.media-amazon.com/images/I/61pXwqeM53L.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 S***S on 11 February 2026*

Hermoso reloj y a super precio, valió la pena la espera

### ⭐⭐⭐⭐⭐ 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pt/products/446575930-seiko-spb121-prospex-mens-watch-brown-39-5mm-stainless-steel](https://www.desertcart.pt/products/446575930-seiko-spb121-prospex-mens-watch-brown-39-5mm-stainless-steel)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-13*