THE. PIECE.
黒炎 | Koku’en - Black Flame
Discipline. Power. Fire.
Built from fire held in iron. Onyx controls. Hematite grounds. Lava Stone burns within. Together they forge unstoppable will — calm, focused, and fiercely driven.
Finished with the black seal — silent, grounded, and unyielding. Made for the man who moves with force, but never loses control.
YOUR BEADS. YOUR JOURNEY.
YOUR. FIT.
Your Fit
Each Rengetsu piece is sized by its inner circumference - designed to match the wrist it's made to fit.
How to Measure
Wrap a soft tape measure - or a string you can mark - around the smallest part of your wrist.
Measure tightly. The measured number is your Close Fit; add 0,5 cm (or 0.2") if you prefer a Comfort Fit.
Between two sizes? Go up.
True strength leaves room to move.
|
Wrist Circumference |
Close Fit |
Comfort Fit |
|
16 cm (6.3") |
16 cm (6.3") |
16,5 cm (6.5") |
|
16,5 cm (6.5") |
16,5 cm (6.5") |
17 cm (6.7") |
|
17 cm (6.7") |
17 cm (6.7") |
17,5 cm (6.9") |
|
17,5 cm (6.9") |
17,5 cm (6.9") |
18 cm (7.1") |
|
18 cm (7.1") |
18 cm (7.1") |
18,5 cm (7.3") |
|
18,5 cm (7.3") |
18,5 cm (7.3") |
19 cm (7.5") |
|
19 cm (7.5") |
19 cm (7.5") |
19,5 cm (7.7") |
|
19,5 cm (7.7") |
19,5 cm (7.7") |
20 cm (7.9") |
|
20 cm (7.9") |
20 cm (7.9") |
20,5 cm (8.1") |
|
20,5 cm (8.1") |
20,5 cm (8.1") |
21 cm (8.3") |
|
21 cm (8.3") |
21 cm (8.3") |
21,5 cm (8.5") |
*This size guide is provided for reference only. Rengetsu cannot be held liable for any deviations in fit.
SHIPPING
Shipping & Delivery
All orders placed on weekdays ship within 24 hours. Orders placed over the weekend ship on Monday.
- Netherlands: 1-2 business days
- Belgium and Germany: 2-4 business days
- Rest of Europe: 7-10 business days
You will receive a tracking link as soon as your order has shipped.
COSTS
Shipping is free:
- From €75 within the Netherlands
- From €125 within Belgium and Germany
- From €150 within the rest of Europe
GIFT. READY.
Power in Presentation
Each Rengetsu piece arrives in a deep blue box, embossed in gold and crafted to reflect the care within.
Inside: your selected bracelet, a signature Rengetsu pouch, and a pearl-white Rengetsu piece card.
No receipts or prices are included.
Ready to be gifted. Or claimed.