Grow Tonneau

HEE005J

A new titanium tonneau case joins the regular Lukia Grow lineup.

This entry covers HEE005J / HEE006J. These are regular models, separate from the Liberty Fabric limited editions. International availability has not been confirmed.

¥103,400Upcoming · October 9 release

HEE005J and HEE006J are ¥103,400 each, including Japanese tax.

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Japan announcement

Regular collection · no edition limit stated

Seiko announces a Japanese October 9 release; the announcement does not establish Japan-only distribution. Official evidence (Japanese) ↗

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Announced Sep 1, 2026 · Checked September 17, 2026

THE ESSENTIALS

At a glance.

Case diameter: 24.6 mm
Movement: Seiko 1B32
Power source: Solar radio-controlled
Power reserve: 6 months on full charge
Water resistance: 100 m
Release window: October 9, 2026

Specifications refer to the model described above. Brand information takes precedence if a review differs.

GO A LITTLE DEEPER

The coverage 01

Read the original reporting and impressions.

Seiko JapanBrand announcement · Japanese

Official Japanese announcement of the new regular-production case shapes.

Editorial coverage · Sep 1, 2026