HYAKUICHI 101 1st Hyakuichi Quartz Diver’s Watch, Date Display, 20 ATM Water Resistant Wrist Watch HYAKU1-001 (Blue)

Price: S$275.16 - S$112.34
(as of Jun 05, 2026 23:34:27 UTC – Details)

Product description

↓↓↓HYAKU1-001-BK↓↓

HYAKUICHI

More information than the need to be overflowing in the modern day, the warmth of the old days is missing.

The “101” depicts a culture that is not forgotten as a rule.

It is also an anti-thease aimed at a large amount of information digital culture.

HYAKUICHI pays homage to the spirit of always beginning, without being too dull and delicate, the spirit of exploration and pursuing the future.

Although it is not absolutely gorgeous, we want to strive for “meaningful value”.

We would be happy to agree with this core.

We aim to achieve better abundance with uncompromising construction.

Water resistant to 20 ATM.

Regarded as a “10 ATM water resistance = strong waterproof” which can be used for water sports such as swimming, competitive swimming, yachting, and even skin diving.It is completely unaffected in the event of submersion or downpours, and has unnecessary toughness under harsh environments.

Please refrain from using it in situations where water pressure is above 20 ATM, such as when using a high pressure washer or jumping in high places.

Applied Index

Hour Index.

Raised 3D indices from the dial increase luxury and increase visibility.

Round index size is approximately 2.5mm per case diameter 42mm

The basis of precise calculations in face balance.

Glow in the Dark

The indexes themselves are Lumibrite (ghost) which makes it easy to check the time in the dark.

Luminescent light absorbs and stores sunlight and light in a short amount of time, and provides a luminous function that emits light for a long time (3 to 5 hours and 5 to 8 hours for some items).

It contains absolutely no radioactive substances, so it is safe for you and the environment and can be used in a wide range.

Also, as the main ingredient of ceramics, it is less degradation and can be used permanently.

Polished x Hairline Bracelet

Combination bracelet made of 2 stainless steel.

The solid block bracelet is classy and resistant to rust and scratch

Maximum arm circumference is about 20.5cm.

Adjustment type with split pin

Black x Gold is a two-tone bracelet.

Other colors are Silver x Silver

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Customer Reviews

4.2 out of 5 stars 98

4.0 out of 5 stars 47

4.2 out of 5 stars 29

4.5 out of 5 stars 196

4.2 out of 5 stars 44

Price

— no data
S$185.61S$185.61 S$185.61S$185.61 S$185.61S$185.61 S$112.34S$112.34

Movement
Center Chronograph Center Chronograph Center Chronograph Center Chronograph Quartz [1 Second Hand]

Color
Black × White Black x Black Black x Gray Black x Ice Blue Ice Blue

Waterproof
Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM.

Bezel
Ceramic Ceramic Ceramic Ceramic Aluminum

Bracelet
Silver Silver Silver Silver Silver

In dial (left)
Small second Small second Small second Small second no data

Indial (bottom)
60 minutes 60 minutes 60 minutes 60 minutes no data

Indial (Right)
24 Hour Meter 24 Hour Meter 24 Hour Meter 24 Hour Meter no data

Back cover
Screw Back Screw Back Screw Back Screw Back Screw Back

date
Yes Yes Yes Yes Yes

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Add to Cart

Customer Reviews

4.1 out of 5 stars 71

4.0 out of 5 stars 5

4.2 out of 5 stars 11

4.2 out of 5 stars 1,704

3.7 out of 5 stars 21

Price

S$205.96S$205.96
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S$214.10S$214.10

Movement
Center Chronograph Center Chronograph Center Chronograph Quartz [1 Second Hand] Mechanical Movement

Color
full black Pink gold × black Pink gold x pink gold. silver black black

Waterproof
Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM.

Bezel
Ceramic Ceramic Ceramic Aluminum Stainless steel (hairline)

Bracelet
black pink gold pink gold black rubber Silver

In dial (left)
Small second Small second Small second no data
no data

Dial (bottom)
60 minutes 60 minutes 60 minutes no data
no data

Indial (Right)
24 Hour Meter 24 Hour Meter 24 Hour Meter no data
no data

Back cover
Screw Back Screw Back Screw Back Screw Back Screw Back

date
Yes Yes Yes Yes No

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Add to Cart

Add to Cart

Customer Reviews

4.3 out of 5 stars 206

3.8 out of 5 stars 23

4.3 out of 5 stars 246

4.3 out of 5 stars 246

4.2 out of 5 stars 370

4.4 out of 5 stars 105

Price

S$144.91S$144.91
— no data

— no data

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S$193.75S$193.75 S$226.31S$226.31

Movement
Quartz [Sweep 1/4 Second Hand] Quartz [1 Second Hand] Quartz [1 Second Hand] Quartz [1 Second Hand] Mechanical movement [with hack function] Mechanical movement [with hack function]

Bezel Material
Ceramic Ceramic Ceramic Ceramic Aluminum Ceramic

date
No Yes Yes Yes Yes No

Waterproof
Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM. Water resistant to 20 ATM.

Back cover
Screw Back Screw Back Screw Back Screw Back Screwback (See through) Screwback (See through)

Buckle
Tri-fold push button buckle Tri-fold push button buckle Tri-fold push button buckle Tri-fold push button buckle Tri-fold push button buckle Triple fold locking buckle

Bezel Specifications
Unidirectional Bezel Unidirectional Bezel Unidirectional Bezel Unidirectional Bezel Unidirectional Bezel Unidirectional Bezel

Bracelet
All Hair Line All Hair Line All Hair Line All Hair Line All Hair Line All Hair Line

Crown
Screw-in Screw-in Screw-in Screw-in Screw-in Screw-in

Introducing 4 types of antique design watches from the “HYAKUICHI” brand “SIS”.

What is SIS ?

The “SIS” logo is designed with a bis-motif that looks like the “SIS” has been converted into hieroglyphics.

The two screws arranged as fractions, are 1/1 = 1, representing the importance of not standing on people, and the beauty of their thoughts.

The screws have the power to connect, but their existence is discreet and understated.

If you were able to perform the important role of connecting people to people without anyone knowledge.

There is no better joy if you could connect it to those who agree.

Explore the joy of choosing your own personality in the multitude of intersecting information.

Be yours!

You in your world, not you in someone’s world.

You are the world.

The world is you.

The “SIS” has been thinking of this.

Customer Reviews

4.7 out of 5 stars 13

3.6 out of 5 stars 9

4.3 out of 5 stars 4

4.6 out of 5 stars 4

Price

— no data

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Movement
Quartz [Sweep 1/4 Second Hand] Quartz [Sweep 1/4 Second Hand] Quartz [Small Second] Quartz [Small Second]

Waterproof
Water resistant to 5 ATM. Water resistant to 5 ATM. Water resistant to 5 ATM. Water resistant to 5 ATM.

Band
Genuine Leather Genuine Leather Genuine Leather Genuine Leather

date
No No No No

Buckle
Buckle Buckle Buckle Buckle

Back cover
Screw Back Screw Back Screw Back Screw Back

Batteries ‏ : ‎ 1 Unknown batteries required. (included)
Is Discontinued By Manufacturer ‏ : ‎ No
Package Dimensions ‏ : ‎ 11 x 8.6 x 7 cm; 339.99 g
Date First Available ‏ : ‎ February 10, 2014
Manufacturer ‏ : ‎ HYAKUICHI 101(ヒャクイチ 101)
ASIN ‏ : ‎ B00ICGOXCU
Manufacturer reference ‏ : ‎ HYAKU1-001
Country of Origin ‏ : ‎ Japan
Department ‏ : ‎ mens
Amazon Bestseller: #28,535 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #205 in Men’s Wrist Watches
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Product summary

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