---
product_id: 66100039
title: "Men Automatic Mechanical Watches Full Steel Waterproof Mens Watches with Calendar"
brand: "mastop"
price: "$66.87"
currency: USD
in_stock: true
reviews_count: 13
category: "Mastop"
url: https://www.desertcart.us/products/66100039-men-automatic-mechanical-watches-full-steel-waterproof-mens-watches-calendar
store_origin: US
region: United States of America
---

# 30m waterproof rating Japanese automatic movement 39mm stainless steel case Men Automatic Mechanical Watches Full Steel Waterproof Mens Watches with Calendar

**Brand:** mastop
**Price:** $66.87
**Availability:** ✅ In Stock

## Summary

> ⌚ Elevate your wrist game with mechanical mastery and modern resilience!

## Quick Answers

- **What is this?** Men Automatic Mechanical Watches Full Steel Waterproof Mens Watches with Calendar by mastop
- **How much does it cost?** $66.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/66100039-men-automatic-mechanical-watches-full-steel-waterproof-mens-watches-calendar)

## Best For

- mastop enthusiasts

## Why This Product

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

## Key Features

- • **Date at a Glance:** Magnified date window at 3 o'clock keeps you punctual and polished, every single day.
- • **Waterproof Confidence:** 30 meters water resistance lets you conquer daily splashes without worry.
- • **Effortless Timekeeping:** Reliable Japanese automatic movement means no batteries—just wear and wind to keep perfect time.
- • **Timeless Craftsmanship:** Classic 39mm stainless steel case blends durability with sleek style for every occasion.
- • **Secure & Comfortable Fit:** Folding clasp with safety ensures your watch stays put during busy days and important meetings.

## Overview

The MASTOP WI8066 men's automatic mechanical watch features a robust 39mm stainless steel case, mineral crystal glass, and a secure folding clasp. Powered by a precise Japanese automatic movement, it offers a battery-free experience with a magnified date window and 30-meter water resistance, making it a stylish and practical choice for professionals seeking classic elegance with everyday durability.

## Description

Oval Watches For Women Unique Watches for Men Men's Car Watch Creative Mechanical Watches for men Gold Vintage Women's Watch Dragon Watches Men Square Women's Watch Square Watches for Men Digital Watches Silicone Strap Women's Small Quartz Wactehs Mens Watches Waterproof Couple Watches Men's Chronograph Sports Watch Couple Automatic Mechanical Heart Shape Diamonds Leather Diamond watches for women Roulette Hollow Watch

Review: Very nice for a $30 automatic - My son was looking for an automatic mechanical watch after getting frustrated with his quartz watches having dead batteries, so I got him this as a starter mechanical watch. We knew going into the purchase that for $30 we shouldn't expect to much. To our surprise the watch exceeds our expectations. Overall, the look and feel seems to be solid, better than I expected. Even the rotating bezel has a nice feel to it and decent sounding clicks. Once it's running it keeps decent time, and he says it is comfortable to wear and he likes the looks, so it's being used regularly. My son's one complaint is that the power reserve seems a bit limited. The watch has a hand winding feature, so it is possible that the auto-wind feature just doesn't supply enough over the day. I think it might be best to hand-wind before wearing, but it's not my watch and the fact that he has to set it in the morning isn't an issue. All that being said, we like the watch and would recommend it for someone who wants to dip their toe into the world of mechanical watches and stop dealing with batteries. The watch we purchased has the stainless steel bracelet and it arrives at full size, which was too big. Fortunately they included a device to drive the pins out to resize the bracelet. This device is probably good for three of four re-sizing's, it's just very cheap, but it got the job done. If you are considering trying an auto-winding mechanical watch feel free to give this one a try. It's actually very impressive considering the low cost.
Review: Looks Like a Watch - Even for a $23 watch, there are a few things that pretty much have to be included. First, one should be able to set the time on the watch, which this watch was initially not capable of doing. It still takes fingernail damaging force to get the winding stem into the time setting position. Next, the winding weight, which is visible through the glass back, initially didn't rotate, so the watch did not wind while wearing, pretty much what an automatic watch is supposed to do. It seems to be breaking in, but if something else screws up, back it goes. And it did. The automatic wind function does not work so the watch is a paper weight. It is going back.

## Features

- Imported
- Round watch featuring corrugated unidirectional bezel, luminous hands/markers, and magnified date window at three o'clock
- Folding clasp with safety, easy to handle and not easy to fall off accidentally.
- Japanese automatic movement with analog display; Crystal Type: Mineral
- Fashionable, very charming for all occasions. Amazing looking watch, a great gift for family and friends.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0759VMKYM |
| Additional Features | Date |
| Age Range Description | Adult |
| Band Color | Silver |
| Band Material Type | Stainless Steel |
| Band Width | 22 Millimeters |
| Bands | 1 |
| Best Sellers Rank | #170,884 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #568 in Men's Wrist Watches |
| Brand Name | MASTOP |
| Case Diameter | 39 Millimeters |
| Case Material Type | Stainless Steel |
| Case Thickness | 12 Millimeters |
| Character | Fashion |
| Clasp Type | Folding Clasp with Safet |
| Clasp type | Folding Clasp with Safet |
| Closure Type | Magnetic |
| Crystal | Mineral Glass Mirror |
| Customer Reviews | 3.6 out of 5 stars 610 Reviews |
| Dial Color | Silver White |
| Display | Analog |
| Embellishment Feature | Crystal |
| Face Style | Skeleton |
| Item Weight | 0.2 Kilograms |
| Manufacturer | MASTOP |
| Manufacturer Part Number | W123 |
| Model Name | WI8066 |
| Model Number | WI8066 |
| Pattern | Solid |
| Power Source | Automatic |
| Shape | Round |
| Sport Type | Walking |
| Strap Type | Bracelet |
| Style Name | Mechanical |
| UPC | 613852034286 |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Watch Movement Type | Japanese Automatic |
| Water Resistance Depth | 30 Meters |
| Water Resistance Level | Waterproof |

## Images

![Men Automatic Mechanical Watches Full Steel Waterproof Mens Watches with Calendar - Image 1](https://m.media-amazon.com/images/I/612IP-3G6iL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Is the movement Japanese and if not why are you advertising it as having one?**
A: The movement is unbranded as far as I can see, and that leads me to believe that it is probably of Chinese make. Keeps ok time, just ok, you can regulate it, but I don't wear it enough to justify doing that.

**Q: Honestly how good is this watch, a good automatic watch for 20 dollars is unheard of**
A: It’s awesome for 20.00

**Q: Is the bracelet hollow?**
A: Yes, the bracelet is hollow.

**Q: How easy is it to remove links?**
A: I don't know, I removed the entire band and replaced it with a leather strap.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very nice for a $30 automatic
*by M***N on February 9, 2025*

My son was looking for an automatic mechanical watch after getting frustrated with his quartz watches having dead batteries, so I got him this as a starter mechanical watch. We knew going into the purchase that for $30 we shouldn't expect to much. To our surprise the watch exceeds our expectations. Overall, the look and feel seems to be solid, better than I expected. Even the rotating bezel has a nice feel to it and decent sounding clicks. Once it's running it keeps decent time, and he says it is comfortable to wear and he likes the looks, so it's being used regularly. My son's one complaint is that the power reserve seems a bit limited. The watch has a hand winding feature, so it is possible that the auto-wind feature just doesn't supply enough over the day. I think it might be best to hand-wind before wearing, but it's not my watch and the fact that he has to set it in the morning isn't an issue. All that being said, we like the watch and would recommend it for someone who wants to dip their toe into the world of mechanical watches and stop dealing with batteries. The watch we purchased has the stainless steel bracelet and it arrives at full size, which was too big. Fortunately they included a device to drive the pins out to resize the bracelet. This device is probably good for three of four re-sizing's, it's just very cheap, but it got the job done. If you are considering trying an auto-winding mechanical watch feel free to give this one a try. It's actually very impressive considering the low cost.

### ⭐ Looks Like a Watch
*by W***L on March 12, 2019*

Even for a $23 watch, there are a few things that pretty much have to be included. First, one should be able to set the time on the watch, which this watch was initially not capable of doing. It still takes fingernail damaging force to get the winding stem into the time setting position. Next, the winding weight, which is visible through the glass back, initially didn't rotate, so the watch did not wind while wearing, pretty much what an automatic watch is supposed to do. It seems to be breaking in, but if something else screws up, back it goes. And it did. The automatic wind function does not work so the watch is a paper weight. It is going back.

### ⭐⭐⭐⭐⭐ Way better than expected-The timekeeping is outstanding.
*by C***N on March 22, 2019*

For the record I tinker on watches as a hobby. Why am I buying this then?. I wanted a beater automatic with a date-and waterproof. Waterproof on older watches is very hit-miss and they are intrinsically more valuable than I care to wear on a casual basis. I have a timing machine so I checked. This watch as delivered was very close to perfect in poise & beat error. Over the 1st 3 days I gained / lost 3 seconds and now it has settled down to a -1 sec a day. That's way better than most expensive watches. The cons: The band is ok-especially for the price. But the link pins are solid not split-making sizing a royal pain-hard to drift out properly. And the fake Pepsi bezel rotates one way & clicks well-but is not secure and loose on one side. That's it so far. The amazing: The poise-or positional error-is near zero. This makes the watch keep good time in any position. In general the Asian movements have good timekeeping . This one however is near perfect and that is so very hard to do. I can only assume they have a clever machine that does the balance error adjustments on the balance wheel. ------------ No problems of note but just a week in. If it blows up or has a odd failure I'll report back. By any measure this is a tremendous value for a mechanical automatic watch.

## Frequently Bought Together

- MASTOP Men Automatic Mechanical Watches Full Steel Waterproof Mens Watches with Calendar
- Gute Mens Watches, Mechanical Skeleton Stainless Steel Waterproof Automatic Self-Winding Watch for Men, Luxury X Dial Steampunk Wrist Watch
- FORSINING Men's Watch Self-Wind Skeleton Hollow Out Mechanical Automatic Luxury Watches, Blue Black Stainless Steel Band Waterproof Wristwatch

---

## 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.us/products/66100039-men-automatic-mechanical-watches-full-steel-waterproof-mens-watches-calendar](https://www.desertcart.us/products/66100039-men-automatic-mechanical-watches-full-steel-waterproof-mens-watches-calendar)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-14*