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Seiko Marinemaster 300 Automatic Diver SBDX017 Luxury Watch Review

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Today, we present to you the Seiko Marinemaster 300 Automatic Diver SBDX017 Luxury Watch Review. In this comprehensive analysis, we will delve into the intricate details of this timepiece, providing you with a thorough understanding of its features and functionality. The review is accompanied by a video from WatchBox Reviews, allowing you to witness the watch in all its glory.

Measuring 44mm across the round of the case, excluding the crown, the Seiko Marinemaster 300 Automatic Diver is a robust timepiece that exudes luxury and sophistication. With a thickness of 15mm and a lug-to-lug measurement of 50.2mm, it showcases a substantial presence on the wrist. Crafted from stainless steel, both the case and bracelet exhibit a solid construction, ensuring long-lasting durability. The bracelet features a tri-fold push button release clasp with a safety lock, offering convenience and security. To obtain a comprehensive understanding of this timepiece, we invite you to view the entire video review. For the latest arrivals of pre-owned luxury watches and remarkable value in previously loved timepieces, please visit our website at

Seiko Marinemaster 300 Automatic Diver SBDX017 Luxury Watch Review



When considering the size of a watch, it’s important to find one that fits comfortably on your wrist without appearing too large or small. A well-fitted watch can enhance your overall appearance and make a statement. Look for a size that complements your wrist size and personal style. Consider the case diameter and thickness, as well as the strap width and length.


The material of a watch can greatly affect its durability, appearance, and overall quality. Common watch materials include stainless steel, titanium, ceramic, and various types of alloys. Stainless steel is a popular choice due to its strength, resistance to corrosion, and timeless aesthetic. Titanium is another excellent option, known for its lightness and hypoallergenic properties. Ceramic watches are highly scratch-resistant and offer a sleek, modern look.


The clasp on a watch ensures that it securely fastens to your wrist and prevents any accidental openings. There are various types of clasps available, including fold-over clasps, push-button deployment clasps, and buckle clasps. Each clasp type offers different levels of security and ease of use. Consider your personal preferences and the overall design of the watch when choosing the clasp type.


A reliable and user-friendly website is essential when purchasing a watch. A well-designed website should provide detailed product information, high-quality images, and intuitive navigation. Look for websites that have a secure payment system, customer reviews, and clear return policies. A professional and informative website can instill trust and confidence in your purchasing decision.



The case of a watch refers to the outer housing that holds all the internal components. It plays a crucial role in protecting the movement and dial of the watch while also providing a stylish and aesthetically pleasing design. Cases can come in various shapes, such as round, square, or rectangular. Consider the material, finish, and overall design elements of the case to find one that suits your personal style and preferences.


The bracelet of a watch can greatly affect its comfort, durability, and visual appeal. Common bracelet materials include metal (such as stainless steel or titanium), leather, rubber, and fabric. Metal bracelets offer a classic and sophisticated look, while leather straps provide a more vintage and casual feel. Consider the material quality, texture, and fastening mechanism when choosing a bracelet.


The dial, or face, of a watch is where the time is displayed. It is a focal point of the watch and greatly influences its overall design. Dials can come in various colors, finishes, and designs, ranging from simple and minimalistic to elaborate and intricate. Consider factors such as legibility, style, and personal preference when selecting a dial.


The markers on a watch’s dial are used to indicate the hours, minutes, and sometimes seconds. They can come in different forms, such as Arabic numerals, Roman numerals, or simple hour markers. The design, size, and color of the markers can greatly impact the overall readability and aesthetics of the watch. Choose markers that are clear and easy to read, while also complementing the overall design.



The movement of a watch refers to the mechanism that powers the watch and keeps time. There are two main types of watch movements: mechanical and quartz. Mechanical movements are powered by a mainspring and require regular winding or automatic movement through the wearer’s wrist motion. Quartz movements, on the other hand, are powered by a battery and provide highly accurate timekeeping.


The accuracy of a watch is an important factor to consider, especially if you rely on precise timekeeping. Mechanical watches are generally less accurate than quartz watches, as they can gain or lose a few seconds per day. Quartz watches, on the other hand, have a much higher level of accuracy, typically losing or gaining only a few seconds per month. Consider your needs and preferences when evaluating the accuracy of a watch.

Power Reserve

The power reserve refers to how long a mechanical watch will continue to run after it has been fully wound. It indicates the amount of time the watch can function without additional winding. Power reserve varies depending on the specific watch and movement, with some watches offering a few days to several weeks of power reserve. Consider your lifestyle and watch-wearing habits when evaluating the power reserve of a watch.

Water Resistance

Depth Rating

The water resistance of a watch is an important consideration, especially if you plan to wear it while swimming, snorkeling, or engaging in other water-related activities. The depth rating of a watch indicates the maximum depth it can be submerged without water entering the case. Common depth ratings include 30 meters (100 feet), 50 meters (165 feet), and 100 meters (330 feet). It’s important to note that water resistance is not a permanent feature and can deteriorate over time. Regular maintenance and proper care are essential to maintaining the water resistance of a watch.

Sealing System

The sealing system of a watch is what ensures its water resistance. It consists of various gaskets and seals that prevent water from entering the case through vulnerable points, such as the crown, caseback, and pushers. A well-designed sealing system helps keep the internal components of the watch safe from water damage. Look for watches with high-quality seals and gaskets to ensure optimal water resistance.



Luminosity refers to the watch’s ability to glow in low-light conditions, making it easier to read the time. Watches with luminous markers and hands allow for convenient timekeeping even in dark environments. Common materials used for luminous elements include Super-LumiNova and Tritium. Consider the level of luminosity and its duration when evaluating a watch’s luminosity feature.

Rotating Bezel

A rotating bezel is a feature commonly found on dive watches and is used to measure elapsed time underwater. It is typically marked with minute increments and can be rotated in one direction, usually counterclockwise, to track elapsed time. Rotating bezels add functionality and a sporty look to a watch. Consider the smoothness of rotation and the precision of the bezel when evaluating this feature.

Screw-Down Crown

A screw-down crown is an important feature for water-resistant watches. It helps ensure the water resistance of the watch by creating a watertight seal when screwed down. This feature is particularly important for watches with a high depth rating or for those that will be exposed to water regularly. Consider the ease of use and effectiveness of the screw-down crown when evaluating its inclusion in a watch.

Date Functionality

The date functionality is a common feature found on many watches, allowing the wearer to easily reference the current date. It can be displayed in different ways, such as on a separate subdial or window on the dial. Consider the legibility and placement of the date display when evaluating this functionality.



The accuracy of a watch is crucial for reliable timekeeping. A watch that consistently keeps accurate time ensures you are never late or miss important appointments. Consider the movement type and the specific accuracy specifications of a watch when evaluating its performance in terms of accuracy.


Durability is an important aspect to consider, especially if you lead an active lifestyle or plan to wear the watch in challenging environments. A well-built watch should be able to withstand daily wear, bumps, and occasional shocks without significant damage. Look for watches made from durable materials, such as stainless steel or titanium, and those with scratch-resistant crystals.


Reliability is another important factor when choosing a watch. A reliable watch should function consistently without frequent malfunctions or issues. Look for watches from reputable brands with a history of producing reliable timepieces. Customer reviews and recommendations can also provide insights into the reliability of a watch.


  1. Diverse size options to suit various wrist sizes and styles
  2. High-quality materials and finishes that ensure durability
  3. Secure and user-friendly clasps for hassle-free wear
  4. Informative and professional websites that facilitate easy purchasing decisions
  5. A wide range of case designs to cater to individual preferences
  6. Versatile bracelet options for different occasions and preferences
  7. Well-designed dials for enhanced legibility and visual appeal
  8. Clear and easily readable markers that complement the overall design
  9. Accurate and reliable movement types for precise timekeeping
  10. Ample power reserve to ensure uninterrupted operation
  11. Excellent water resistance ratings suitable for various water activities
  12. Effective sealing systems to protect the watch from water damage
  13. Luminous features for easy timekeeping in low-light conditions
  14. Functional rotating bezels for tracking elapsed time underwater
  15. Screw-down crowns for enhanced water resistance
  16. Convenient date functionality for easy reference


  1. Limited size options that may not cater to extreme wrist sizes
  2. Some materials may be prone to scratching or damage with regular wear
  3. Certain clasp types may be less convenient for daily use
  4. Websites that lack detailed product information or intuitive navigation
  5. Some case designs may not appeal to all personal styles
  6. Certain bracelet materials may not be suitable for certain skin types or preferences
  7. Dials with complex designs may compromise legibility
  8. Marker designs that may not suit individual tastes
  9. Mechanical movements may not offer the same level of accuracy as quartz movements
  10. Limited power reserve may require frequent winding or usage to keep the watch running
  11. Water resistance ratings may not be suitable for deep-sea diving activities
  12. Sealing systems that may deteriorate over time and require regular maintenance
  13. Luminous features that may fade over time and require recharging or replacement
  14. Rotating bezels that may be prone to accidental movement
  15. Screw-down crowns that may be less convenient to operate
  16. Date functionality that may require adjustments for months with different numbers of days


The price of a watch can vary greatly depending on various factors, including brand, materials, features, and craftsmanship. Higher-end watches often command a higher price due to superior quality and exclusivity. On the other hand, budget-friendly options can still provide excellent value for money. Consider your budget and desired features when evaluating the price of a watch.


In conclusion, when choosing a watch, it is important to consider various specifications, design elements, movement type, water resistance, features, and performance. The size, material, and clasp of the watch should be comfortable and suitable for your wrist size and personal style. The case, bracelet, dial, and markers should be visually appealing and enhance readability. The movement’s type, accuracy, and power reserve should meet your timekeeping needs. Water resistance and sealing systems should be sufficient for your water-related activities. Features like luminosity, rotating bezels, screw-down crowns, and date functionality should add usability and convenience. Finally, factors like accuracy, durability, and reliability should assure the watch’s long-term performance. Consider the pros and cons of each aspect before making a purchasing decision. Ultimately, the price should align with your budget and the overall value provided by the watch. With careful consideration and evaluation, you can find a watch that meets your needs, matches your style, and offers reliable and accurate timekeeping for many years to come.

I'm, your trusted guide to the captivating world of horology. At Mt. Watches, I am dedicated to providing you with a wealth of knowledge and resources when it comes to timepieces. Regardless of your expertise level, whether you're just starting your horological journey or have a refined taste for luxury watches, I have tailor-made content for you. My comprehensive guides, informative how-to articles, and expert reviews are carefully curated to enlighten, educate, and inspire you. From delving into the complexities of watch mechanics to staying updated on the freshest trends in luxury wristwear, your exploration of time begins and reaches the pinnacle of wisdom here at Mt. Watches.

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