Grand Seiko’s GMTs: Steel Bezel Precision

Grand Seiko is a brand that has been synonymous with high-quality watches for decades. Known for their precision and attention to detail, Grand Seiko watches have become a favourite among watch enthusiasts worldwide. One of their most popular collections is the GMTs: Steel Bezel Precision line, which perfectly balances style and functionality.

This article will point out everything you need to know about SBGM245 and SBGM247 and why they’re the best Seiko mods to watch out for.


In case you don’t know, the steel bezel of Grand Seiko’s GMTs: Steel Bezel Precision line is a signature feature that sets it apart from other watch collections. The SBGM245 and SBGM247 are no exception, featuring a 39.5mm stainless steel case with a thickness of 13.7mm.

The case is polished beautifully, giving it a sleek and refined look. Aside from that, the crystal is made with sapphire, ensuring scratch resistance and durability. The watch also has a screw-down crown that adds to the overall water resistance of the watch.


The dials of the SBGM245 and SBGM247 Seiko mods are stunning. After all, it uses two colours to create a beautiful contrast that catches the eye. The SBGM245 watch features a stunning midnight blue colour and a GMT hand-highlighted in red. In contrast, the SBGM247 watch presents a fresh green shade from the brand and an orange-coloured GMT hand.

Aside from that, the dial features a two-toned finish that adds depth and character to the watch. The hour markers and hands are stained in Lumibrite, making them easily visible in low-light conditions. The dials also feature a date window at the three o’clock position, adding to the watch’s functionality.


Of course, many watch enthusiasts are particular about the bracelet. After all, it’s part of the watch that can significantly affect the overall look and feel of the timepiece. The SBGM245 and SBGM247 come with stainless steel bracelets that are durable and comfortable to wear.

The bracelets feature a three-fold clasp with a push button release, allowing easy and secure fastening. This way, you can ensure your watch won’t accidentally fall off your wrist. The bracelets also have a brushed and polished finish that matches the case, giving the watch a cohesive and sophisticated look.


The SBGM245 and SBGM247 are powered by Seiko’s 9S66 automatic movement, made in-house by the brand. This movement has a power reserve of approximately 72 hours, meaning you can take the watch off for a weekend, and it will still keep ticking.

The 9S66 movement is also accurate and reliable, thanks to its high precision and durability. It has a frequency of 28,800 vibrations per hour and contains 35 jewels, which reduce friction and wear on the moving parts.

Moreover, the movement is equipped with Seiko’s proprietary Spron 610 hairspring, made from a special alloy that ensures excellent stability and resistance to temperature changes. This means that the watch will keep accurate time even in extreme conditions.

Final Thoughts

Grand Seiko’s GMTs with steel bezel precision offer exceptional style and performance. The steel bezel adds durability and a modern touch to the classic design, while the GMT function ensures precision and convenience for travellers. 

A Grand Seiko GMT suits every taste with various colour options and strap choices. Overall, these watches represent a superb investment for anyone looking for a reliable and stylish timepiece.

Seiko Mods provides a wide array of Seiko mods and watches that you can customise to suit individual tastes and preferences. Whether it’s a new dial, bezel or bracelet, Seiko Mods has everything needed to personalise a Seiko watch and make it uniquely yours. Shop from us today!

Leave a Reply