Seiko Rukia’s “Happy Collection” will release the “2026 Warm Moments Limited Edition”. From Friday, April 17, 2026.

■Ref.HEE002J。 SS (36.3×27.7mm diameter). Water resistance to 10 ATM. Solar radio correction (Cal.1B32). Limited to 600 pieces in Japan. 79,200 yen
Seiko Rukia
Happy Collection 2026 Warm Moments Limited Edition
This model is developed as part of an initiative to support the activities of “Save the Children”, an international NGO specializing in child support. A portion of the proceeds will be donated to support children in Japan and around the world.
The base uses a tonneau-shaped case, which is a long-selling item from the “Happy Collection”.
The dial is made of white butterfly shells, and the heart motif, a symbol of love, is laid out throughout. At 7 o’clock, a four-leaf clover design and a red ruby from Kyocera’s recrystallized gemstone “Cressanvale” are set with one stone. Then, the second hand and the original Arabic font incorporate red as an accent color, which is similar to the logo color of “Save the Children”. Also pay attention to the heart mark engraved on the back pig.
The case size is 36.3mm in length, 27.7mm in width, and 7.7mm in thickness. The case and bracelet are made of stainless steel and have a platinum diamond shield. In addition, the glass is sapphire glass with a super clear coating. Ensures reinforced waterproofing (10 atm) for daily life.
[Image]Seiko Rukia’s new watch from a different angle

■Ref.HEE002J。 SS (36.3×27.7mm diameter). Water resistance to 10 ATM. Solar radio correction (Cal.1B32). Limited to 600 pieces in Japan. 79,200 yen
Inside, it is equipped with a solar radio wave movement “Cal.1B32”. It has a radio wave correction function that receives standard radio waves from Japan, China, the United States, and Germany, and the accuracy when not receiving standard radio waves is ± 15 seconds per month (when worn at a temperature of 5°C~35°C). It has a solar charging function that runs for about 6 months from a full charge.
Nakadome adopts a one-push three-fold method. It’s easy to put on and take off, making it perfect for daily use.
The selling price is 79,200 yen. It will be sold in a limited edition of 600 pieces in Japan.
[Image]Seiko Rukia’s new watch from a different angle
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