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New Seiko Presage Sharp Edged Open-Heart Features a 3-Day Power Reserve

The new Seiko Presage Sharp Edged Open-heart takes even more cues from Grand Seiko but at a fraction of the price....

The Seiko Sharp Edged series has been a fan favourite since its introduction in 2020 thanks to its similarity to some Grand Seiko models but at a fraction of the price. The latest update to the line comes with an almost new movement, a new case, and other tweaks. 

There’s a few new things on the dial with the most obvious being the opening at 9 o’clock allowing you to peek in and see the Seiko 6R5J movement’s balance wheel. It isn’t the most complex movement out there, but the hemp-leaf style decoration does add a sense of elegance. The 24-hour sub-dial at 6 o’clock is also new, but it doesn’t show another time zone, rather it differentiates AM from PM. 

seiko presage sharp edged open-heart
All images credited to Seiko

These inclusions are nice, particularly the open heart, but looking at the dial it feels lopsided. If not lopsided, then crowded. Despite having space on the opposite side of the dial, it feels crowded due to the 24-hour sub-dial overlapping a little with the open heart. Perhaps moving the sub-dial to the 3 o’clock position could rectify this. 

It may be that Seiko wanted to show off their new dial pattern, as both the blue SPB417 and the white SPB415 feature the “asanoha” hemp-leaf texture  used in Japanese textiles for centuries. 

There’s a new double-domed sapphire crystal with anti-reflective coating that pairs well with the new curved seconds hand. 

The 40.2mm stainless steel case is more angular now, complimenting the additional polished flank that adds further to the Grand Seiko feel of the watch. It’s 13.5mm thick, but those polished edges really do a lot to reduce the thickness optically. 

The three-link stainless steel bracelet also has polished details really upping the optical quality of the watch. The bracelet is mostly brushed, but the interior link has polished details, really making them pop. There’s also a leather strap option. 

Both the case and bracelet feature Seiko’s proprietary Super-Hard Coating, making them very scratch resistant. 

You can see the movement behind the exhibition caseback. The 6R5J is an updated version of the usual 6R calibre, running at 3 Hz with a 72-hour power reserve. 

These are priced at $1,950 AUD and will be available in June at Seiko boutiques and select retail partners. 

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