---
product_id: 20342016
title: "Sieko Men's SNK381K Stainless Steel Analog with Black Dial Watch"
brand: "seiko"
price: "¥63355"
currency: JPY
in_stock: true
reviews_count: 13
category: "Seiko"
url: https://www.desertcart.jp/products/20342016-sieko-mens-snk381k-stainless-steel-analog-with-black-dial-watch
store_origin: JP
region: Japan
---

# Water-resistant to 30M Automatic self-wind movement Scratch-resistant Hardlex crystal Sieko Men's SNK381K Stainless Steel Analog with Black Dial Watch

**Brand:** seiko
**Price:** ¥63355
**Availability:** ✅ In Stock

## Summary

> ⌚ Own time like a pro — where heritage meets modern hustle.

## Quick Answers

- **What is this?** Sieko Men's SNK381K Stainless Steel Analog with Black Dial Watch by seiko
- **How much does it cost?** ¥63355 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/20342016-sieko-mens-snk381k-stainless-steel-analog-with-black-dial-watch)

## 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 Comfort:** Push-button foldover clasp ensures a confident fit for your active lifestyle.
- • **Timeless Design:** Classic 38mm stainless steel case and black dial for versatile, professional style.
- • **Durable Elegance:** Scratch-resistant Hardlex crystal maintains a pristine look through your busy days.
- • **Everyday Resilience:** 30 meters water resistance means no worries from rain to hand wash.
- • **Effortless Precision:** Automatic self-wind movement keeps you on time without battery fuss.

## Overview

The Seiko SNK381K is a 38mm stainless steel automatic watch featuring a black dial, scratch-resistant Hardlex crystal, and water resistance up to 30 meters. Designed for the modern professional, it combines Seiko’s 125-year legacy of innovation with durable materials and a secure foldover clasp, delivering reliable, stylish timekeeping that fits seamlessly into your dynamic lifestyle.

## Description

From Humble beginnings, Kintaro Hattori’s Vision for Seiko has become reality. A consuming passion for excellence - imprinted in our Corporate DNA passed from generation to generation. Seiko, for 125 years committed to the art and science of time. A culture of innovation connects a 19th century Tokyo clock shop with 20th century advances in timekeeping to an extraordinary 21st century "quiet revolution." Continually driven by dedication and passion, established a multitude of world’s first technologies transforming the principles of timekeeping. The first quartz wristwatch – changed the history of time. The first Kinetic – marked a new era in quartz watch technology. In 1969, Seiko Astron, the first quartz wristwatch - was introduced. In an instant, Seiko exponentially improved the accuracy of wristwatches –And Seiko technology firmly established today’s standard in Olympic and sports timing. 1984, another celebrated first – Kinetic Technology – powered by body movement. Kinetic – a quartz mechanism with unparalleled accuracy –the driving force behind more world’s firsts. Kinetic Chronograph – the next generation of high performance timekeeping. Kinetic Auto Relay – automatically resets to the correct time. Kinetic Perpetual - combining the date perfect technology of perpetual calendar with the genius of Kinetic Auto Relay. And now Kinetic Direct Drive – move, and the watch is powered automatically. Or hand wind it and see the power you are generating in real time. In the realm of fine watches, time is measured by Seiko innovation – A heritage of dedication to the art and science of time. Black dial. Silver-tone stainless steel case with a silver-tone stainless steel band. Automatic movement. 30 meters / 100 feet water resistance. Fixed bezel. Fold Over with Push Button Release clasp. Case size 38 mm x 11 mm. Seiko SNK381 Seiko 5 Watch.

Review: Nice Lumed Numerals and Matte Dial - Among several Seiko 5s I have, I like this dial the most because it doesn't reflect light back. The matte dial enhances legibility. Not to mention that the dial feels less cluttered than for example the popular SNK809. But the handset isn't the best when it comes to legibility--if only it was paired with the same "all-white" handset found in the SNKN25 (or the older SNX809). But it still is probably the best choice among Seiko 5 'field-watch' options because the SNKN25 dial just has lumed "pips" (numerals are not lumed unlike with the SNK381), the SNX809 has a case that is polished everywhere and is paired with a white day-date that "swallows" the white hands (the hands gets "lost" when they go over the day-date), and the SNK809 isn't really a "field-watch" (as opposed to the SNX809 which is). As Seiko 5 watches go, this is a good one. And the item I received works well out of the box.
Review: Get this Seiko 5 - This is in my opinion is the best Seiko 5 for a watch collection. The applied Arabic numeral indices are fully lumed. The black dial with those numerals makes it super easy to read. Combined with the fully lumed leaf hands and lumed lolly pop second hand makes this dial a lume monster! It's just better than any other seiko 5. I appreciate the display back. The day/date window is large and nicely framed at the 3 o'clock. The crown tucks in nicely at 4 o'clock is not screw down but easily sets the time. The case size is small but the dial is so easy to read. The case itself and bracelet are nicely polished. The bracelet is cheap with folded endlinks. It is a pain removing links even with a watch tool kit. The clasp is cheap thinly stamped metal but functions perfectly. Once properly sized, bracelet is comfortable and does not pinch hairs on my hairy wrist. If you wear this bracelet loose it will pinch your hairs. I think this watch looks and feels great and is a unique addition to any collection.

## Features

- Automatic self wind movement
- Case diameter: 37 mm
- Stainless steel case
- Scratch resistant hardlex
- Water-resistant to 30 M (99 feet)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0009MYUZU |
| Additional Features | Water Resistant |
| Age Range Description | Adult |
| Band Color | Silver |
| Band Material Type | Stainless Steel |
| Band Width | 17 millimeters |
| Bands | 1 |
| Best Sellers Rank | #1,407,243 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #6,134 in Men's Wrist Watches |
| Brand Name | SEIKO |
| Case Diameter | 38 millimeters |
| Case Material Type | Stainless Steel |
| Case Thickness | 10 millimeters |
| Clasp Type | fold-over-push-button-clasp-with-safety |
| Clasp type | Fold-over-push-button-clasp-with-safety |
| Closure Type | Push-Button |
| Crystal | hardlex |
| Customer Reviews | 4.3 out of 5 stars 380 Reviews |
| Dial Color | Black |
| Display | Analog |
| Embellishment Feature | Crystal |
| Face Style | Black Dial with Day and Date Display |
| Global Trade Identification Number | 04900969894145 |
| Included Components | Transparent case back, Stainless Steel Bracelet |
| Item Type Name | watches |
| Item Weight | 150 g |
| Item type name | Watches |
| Item width | 1.4 inches |
| Manufacturer | Seiko |
| Manufacturer Part Number | SNK381K |
| Material | Stainless-steel |
| Metal type | Sterling-silver |
| Model Name | SNK381K1 |
| Model Number | SNK381K1 |
| Model Series | Seiko 5 |
| Number of Items | 1 |
| Pattern | Solid |
| Power Source | Automatic Self Wind |
| Series Number | 381 |
| Shape | Round |
| Sport Type | Walking |
| Strap Type | Bracelet |
| Style Name | casual |
| Theme | Sports |
| Unit Count | 1 Count |
| Warranty Type | Amazon.com |
| Watch Movement Type | Automatic |
| Water Resistance Depth | 99 feet |
| Water Resistance Level | Water Resistant |

## Images

![Sieko Men's SNK381K Stainless Steel Analog with Black Dial Watch - Image 1](https://m.media-amazon.com/images/I/51odWYruZSL.jpg)

## Questions & Answers

**Q: Is the lug width really that odd 17mm?**
A: Nope. The lug width is 18mm.
Source: I have the SNK355, SNK361 and SNK381 which all share the same case (01V0) and the lug widths are 18mm.

**Q: La correa de goma es de 20mm?**
A: Es de 18 mm.

**Q: What grade is the stainless steel?  304? 316? 316L? 904L?**
A: 316 I think

**Q: does the clock also mark the day in the spanish language?**
A: Yes it does have the days in Spanish.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice Lumed Numerals and Matte Dial
*by J***R on January 29, 2025*

Among several Seiko 5s I have, I like this dial the most because it doesn't reflect light back. The matte dial enhances legibility. Not to mention that the dial feels less cluttered than for example the popular SNK809. But the handset isn't the best when it comes to legibility--if only it was paired with the same "all-white" handset found in the SNKN25 (or the older SNX809). But it still is probably the best choice among Seiko 5 'field-watch' options because the SNKN25 dial just has lumed "pips" (numerals are not lumed unlike with the SNK381), the SNX809 has a case that is polished everywhere and is paired with a white day-date that "swallows" the white hands (the hands gets "lost" when they go over the day-date), and the SNK809 isn't really a "field-watch" (as opposed to the SNX809 which is). As Seiko 5 watches go, this is a good one. And the item I received works well out of the box.

### ⭐⭐⭐⭐⭐ Get this Seiko 5
*by J***. on March 4, 2022*

This is in my opinion is the best Seiko 5 for a watch collection. The applied Arabic numeral indices are fully lumed. The black dial with those numerals makes it super easy to read. Combined with the fully lumed leaf hands and lumed lolly pop second hand makes this dial a lume monster! It's just better than any other seiko 5. I appreciate the display back. The day/date window is large and nicely framed at the 3 o'clock. The crown tucks in nicely at 4 o'clock is not screw down but easily sets the time. The case size is small but the dial is so easy to read. The case itself and bracelet are nicely polished. The bracelet is cheap with folded endlinks. It is a pain removing links even with a watch tool kit. The clasp is cheap thinly stamped metal but functions perfectly. Once properly sized, bracelet is comfortable and does not pinch hairs on my hairy wrist. If you wear this bracelet loose it will pinch your hairs. I think this watch looks and feels great and is a unique addition to any collection.

### ⭐⭐⭐⭐ Classic Seiko 5 goodness, with MACV-SOG vibes
*by P***P on July 19, 2024*

Eighteen millimeters. Let's put that right up front, because there's bad info all over the net about this model for some reason. The lug width is 18mm. The strap/bracelet width to order is 18mm. Eighteen. Not 17, not 20, eighteen. 18. Eight, followed by teen. Get a 10mm strap, then stretch it 8mm wider. So this is a Seiko 5. So much has been written and said about these watches. It's all correct, except as noted above regarding the lug width. The lume is excellent, the dial is very, very easy to read, and I wish they'd upgrade the movement to have the features the NH35 has. Hacking is good. It makes it easier to set the watch accurately, although a bit of back pressure on this watch's crown accomplishes about the same thing. And handwinding is even gooder. That's my biggest complaint about the Seiko watches with this movement. If you have one watch and wear this all the time, it's not an issue, but if you have many and switch them out not being able to handwind is annoying. You don't know how much time you have left before it winds down, and the only way to wind it is to shake it, to wear it and be active. And that winds the mainspring a lot slower, less effectively than movements that can handwind. Okay, enough about that. The framed day/date window is a nice touch, especially at such a low price. The case is nice and slim, with comfortable contours and good finishing. The crown is too small. It's not the easiest crown to use. I won't use the phrase "change it if I could," because I can. But I don't want to, because the way it is it homages, it mimics the 1960s Seikos that were worn by some incredibly tough men fighting for others' freedom. It was a military issue item. Those are collectors items now. This is very, very similar to those watches; I can see it. The tiny crown means it sits very flush, so it won't snag. It won't dig into your wrist. It's safe and out of the way. So it stays. As you can see, I immediately swapped the steel bracelet for a NATO strap. I like the clasp on the bracelet. The end links integrate very well with the rest of the bracelet. That's about it. The overall design is too busy for my taste. Varying widths, varying finishes, and as you can see in one of the photos, it doesn't even move smoothly enough. You can see one of the links hanging up and sticking above the others. It shouldn't do that. But maybe they know how many people are immediately going to remove it and replace it with nylon or rubber. I don't know. I also don't know why they don't offer it with a nylon, military looking strap. Not a big deal. If you think you'd like this, and you understand the handwinding gripes, go for it. To SSG Walter Ferguson, Jr., still unaccounted for, we remember you and your MIA brothers, and those who returned from defending freedom to continue your lives. Thank you for your service.

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