This bracelet is available in three setup options.

・Full Bracelet — Empty Glow Core
Includes the complete bracelet with the TC4 titanium mechanical glow core installed. No glow glass tubes or tritium tubes are installed inside the core.

This version highlights the strong mechanical character of the titanium design. You can choose your preferred glow tube colors and enjoy the flexibility of customizing your own combination. A variety of glow glass tubes and tritium tubes in different colors are available in our store.

Please note: the bracelet will not glow unless glow glass tubes or tritium tubes are installed.

・Ice Blue Glow Glass — 6 Tubes Installed
Includes the complete bracelet with 6 compatible 1.5 × 6 mm Ice Blue glow glass tubes installed.

Glow glass absorbs light and releases a temporary glow in low-light conditions.

・Ice Blue Tritium — 6 Tubes Installed
Includes the complete bracelet with 6 compatible 1.5 × 6 mm Ice Blue tritium tubes installed.

Tritium does not require sunlight or external charging and creates a subtle continuous glow in low-light environments.

Additional compatible glow glass tubes and tritium tubes may be sold separately for future customization.

The centerpiece of this bracelet is the TC4 titanium mechanical glow core.

TC4 titanium alloy is selected for its strength, light weight, corrosion resistance, and technical character. Its open-window cylinder structure is designed to hold up to six compatible tubes around the core.

The split-body screw-cap design allows the titanium bead to be opened, configured, and rebuilt.

This is the part that gives the bracelet its identity.

Not a simple charm.
Not an ordinary spacer bead.
A mechanical titanium core designed to be handled.

• Material: TC4 Titanium Alloy
• Length: 16.9 mm
• Outer Diameter: 12 mm
• Inner Hole Diameter: 5 mm
• Weight: approx. 5 g
• Structure: Split-body screw-cap design
• Tube Compatibility: 1.5 × 6 mm glow glass tubes or 1.5 × 6 mm tritium tubes
• Tube Capacity: Holds up to 6 tubes
• Available Setups: Full Bracelet — Empty Glow Core / Ice Blue Glow Glass — 6 Tubes Installed / Ice Blue Tritium — 6 Tubes Installed

• TC4 Titanium Alloy Mechanical Glow Core
• 7A Natural Black Agate
• 7A Natural Dark Green Tiger Eye
• Elastic Bracelet Construction
• Compatible with 1.5 × 6 mm Glow Glass Tubes
• Compatible with 1.5 × 6 mm Tritium Tubes
• Total Bracelet Weight: approx. 31.4 g

A man does not choose this bracelet only because it matches his outfit.

He chooses it for the feeling of precision.
For the weight of genuine natural stone.
For the technical character of TC4 titanium.
For the quiet ritual of opening, assembling, and customizing the glow core.

Black agate brings a dark, focused presence.
Dark green tiger eye adds calm energy and visual depth.
TC4 titanium gives the piece strength, stability, and mechanical edge.

This bracelet sits between jewelry and gear.

It is not made to look loud.
It is made to feel intentional.

Industrial design, made wearable.

Your order includes one complete Mechanical Titanium Glow Core Bracelet in your selected titanium finish, glow setup, and wrist size.

Every bracelet also comes with:

• Premium gift-ready packaging box
• Spare high-quality Japanese elastic cord
• Spare natural stone beads for future maintenance

Full Bracelet — Empty Glow Core includes:

• Complete bracelet
• TC4 titanium mechanical glow core
• No glow glass tubes or tritium tubes installed

Ice Blue Glow Glass — 6 Tubes Installed includes:

• Complete bracelet
• TC4 titanium mechanical glow core
• 6 installed Ice Blue glow glass tubes

Ice Blue Tritium — 6 Tubes Installed includes:

• Complete bracelet
• TC4 titanium mechanical glow core
• 6 installed Ice Blue tritium tubes

Please check your selected setup carefully before checkout.

Spare cord and beads are included as maintenance accessories and may vary slightly due to the natural character of the stones.

Please select your preferred titanium finish, glow setup, and wrist size before checkout.

Full Bracelet — Empty Glow Core includes the complete bracelet with the TC4 titanium mechanical glow core installed, but no glow glass tubes or tritium tubes inside the core.

Ice Blue Glow Glass — 6 Tubes Installed includes the complete bracelet with 6 compatible Ice Blue glow glass tubes installed inside the titanium core.

Ice Blue Tritium — 6 Tubes Installed includes the complete bracelet with 6 compatible Ice Blue tritium tubes installed inside the titanium core.

Additional glow glass tubes and tritium tubes may be sold separately for future customization and replacement.

Natural Stone Notice:
Each bead is made from natural stone. Color depth, texture, banding, light reflection, and cat’s eye effect may vary due to natural formation and cutting position.

These differences are not flaws, but part of the stone’s natural character — ideal for those who appreciate authentic texture, natural energy, and one-of-a-kind details.