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38 mm
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Jios

SEIRAN Lake Biwa Blue × Silver Hands Roman Numerals with Stainless Steel

$331In stock

Last checked Oct 26, 2026

View on Jios’s site ↗

From Jios

Introducing the new color Lake Biwa Blue for JIOS’s first model, SEIRAN!Lake Biwa is a stunning blue lake located in Shiga Prefecture, Japan. The beautiful blue hue is known as a "color that brings happiness"?we call it Lake Biwa Blue. From Shiga to the world, we proudly present this joyful shade through our watches, hoping its “Blue Ripple” of happiness will spread far and wide.This color, often referred to as “Ice Blue” by other brands, is currently trending. At JIOS, we support efforts to promote Lake Biwa Blue globally and are proud to be part of this initiative. Through watchmaking, we hope to contribute in our own unique way to raising awareness of our local region and strengthening its brand identity. That’s why we chose to introduce this color under the name Lake Biwa Blue. The "SEIRAN" is JIOS's first model, featuring a refined classic design that adds a stylish touch to your wrist. It is simple yet elegant, with a combination of Roman numerals and bar indices for easy readability, along with a date display for added functionality. The dial, adorned with a guilloché pattern, boasts a sleek, sophisticated form that makes it suitable for both business and casual occasions. The use of three-dimensional indices adds a sense of luxury, making it appealing to a wide range of ages, from younger individuals to seniors. We have carefully selected materials for each component, utilizing a Japanese movement made by CITIZEN MIYOTA and sapphire glass on both the front and back. The 38mm case size provides a perfect fit, not too large, and it offers a stylish look whether you're on or off duty. A five-link stainless steel bracelet with a luxurious look and feel. It elevates your watch with a more premium, stylish presence. Versatile and easy to pair, it matches any outfit and suits any occasion.

Specifications

Details and photos come from Jios’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.

Case

Diameter
38 mm
Lug-to-lug
Not listed
Thickness
Not listed
Thickness incl. crystal
Not listed
Lug width
18 mm
Material
Other

Movement

Type
Automatic
Caliber
Miyota 8215
Power reserve
40 h
Functions
Not listed

Crystal and bezel

Crystal
Sapphire
Bezel
Not listed

Water resistance

Rated to
100 m

Dial and lume

Dial
Not listed
Lume
Not listed

Strap

Strap
other
Every spec Jios lists
Case
Approximately 38×38×12mm (excluding lugs and crown)
Strap
316L stainless steel
Crystal
Sapphire glass (both sides)
Accuracy
Approx. -20 to +40 seconds per day
Movement
CITIZEN MIYOTA Japanese movement - Cal.8215
Lug width
18mm
Wrist size
Approximately 15-20cm
Power reserve
Up to approximately 40 hours

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Jios SEIRAN Lake Biwa Blue × Silver Hands Roman Numerals with Stainless Steel · Lugworthy