Seiko Spotlight: A Review of the Seiko 5 Sports GMT SSK005K1

A watch is a quintessential accessory because it makes a fashion statement while being functional by telling the time. For this reason, all watch enthusiasts go the extra mile to find the perfect watch. The watchmaking industry has a broad scope, and competition is often close because most brands create high-quality products. However, not all watches are created equal, especially if they stand against Seiko.

Seiko is a Japanese watch brand that has been around for more than 140 years. The company is notable for releasing various products that have stood the test of time, notably the Seiko 5 series, which has been in production since 1963. Among the many variants under the Seiko 5 line, the Seiko 5 Sports GMT SSK005K1 is among the more prominent ones, which few people know about. For this reason, we’ll review this product in this article.

The SSK005K1’s Design

Like most products under the Seiko 5 line, the SSK005K1 is designed with a modern look, which makes it perfect for everyday use. It has a stainless steel case and bracelet, which are durable. The case measures 42mm in diameter, making it ideal for most people’s wrists. It also has an exhibition caseback, allowing you to see the watch’s inner workings.

In terms of functionality, the SSK005K1 is a GMT watch, which means it can tell the time in two different time zones. It has a 24-hour hand and a date display at the 3 o’clock mark. The watch also has a stopwatch feature, which is excellent for timing events.

An automatic movement, the Caliber 4R36, powers the SSK005K1. It’s a reliable movement from Seiko because it has a power reserve of 41 hours and is accurate to +45/-35 seconds per day. The SSK005K1 also has a stainless steel bracelet with a three-fold clasp. The bracelet has a brushed finish, which gives it an elegant look.

Notable Features of the SSK005K1

Seiko watches are known for their cutting-edge features, and the SSK005K1 is no exception. For one, the bezel insert complements the watch’s look, taking after the reflective styles seen in most Seikos from the 50s and 60s. A cyclops date magnifier is also a feature on the watch, making it easier to read.

The SSK005K1 has a screw-down crown, which provides water resistance of up to 100 meters (330 feet). This means the watch can withstand splashes and short periods of swimming. The case also has a Hardlex crystal, a scratch-resistant mineral glass.

As for the water resistance, the SSK005K1 is water-resistant up to 100m, making it on par with most Seiko watches. However, you must avoid prolonged contact with hot water, steam, or pressurised water, as this may cause damage to the watch.

Modding the SSK005K1

Modding Seiko watches is a common practice to improve aesthetics and functionality, and the SSK005K1 is no exception. Among the many mods that can be installed, the SSK005K1 is compatible with a range of bezels, dials, hands, and straps. This opens up a world of possibilities for customising your watch. Additionally, the caseback of the SSK005K1 is easily removable, making it easier to modify the movement.

However, if you want to create a striking feature, installing a new bracelet or strap is the best way. This is relatively easy to source because many aftermarket options are available. The watch also features a standard lug width of 20mm, allowing you to choose from a wide range of straps.

Should You Get One?

The Seiko 5 Sports GMT SSK005K1 is an excellent choice for anyone looking for a reliable watch with a unique look. It’s capable of taking on a variety of mods, and its standard lug width makes it easy to find a watch strap to match your style. In short, the SSK005K1 is perfect for a watch with character.


The Seiko 5 Sports GMT SSK005K1 is an excellent watch for a reliable, stylish timepiece. Even if you don’t have much experience with watches, it’s easy to use and maintain, and modding it is relatively straightforward if you have surface-level knowledge. When you own the SSK005K1, you own a piece of Seiko’s watchmaking expertise.

If you need help modding a Seiko 5, SeikoMods is for you! We have a configurator that allows you to see your watch with mods in real-time, and we also offer various parts for affordable prices. Visit our website today to get started!

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