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Watanabe Kobo Handmade Watch Automatic Winding Back Skeleton Jumbo Brass "Open Heart" Roman Numeral Hand-sewn Belt [NW-BAM060-RO-T]

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Original price $2,342.55 - Original price $2,342.55
Original price
$2,342.55
$2,342.55 - $2,342.55
Current price $2,342.55

[受注制作]3~4週間



Mr. Masaaki Watanabe of Watanabe Koubou is a watchmaker who makes watches one by one by hand at his workshop in downtown Tokyo. We have worked on many watch works that are full of warmth and a tasteful expression unique to handmade.

Mr. Watanabe does everything by hand, from making watch parts such as cases, dials, and belts to assembling them. There is a wide variety of products, from simple designs that can be used for both casual and business purposes, to unique models that incorporate originality and ingenuity. Watches created through a very time-consuming process give warmth and healing that ready-made products do not have.

For the material of the case, we use materials such as brass and silver that can be enjoyed over time. The leather belt is made of genuine leather that is thick yet fits well, giving it a sense of quality and presence. With the flow of time, you will grow attached to it - it is overflowing with such warmth.


An open heart model that allows you to see the movement of the machine from a part of the dial.
It is a soothing work that moves like a human heartbeat.


The accent is a small window where you can see the “heart (machine)”.
(The belt color in the photo is "brown")


With the warmth that can only be achieved by hand, the watch seems to come to life.


This watch named "Open Heart" is a self-winding mechanical watch with a small window on the dial.

The movements of the movement can be seen through the small window, and it looks like a human heartbeat. You will be healed by the sound of the second hand that sounds quietly, "Tick, tick, tick, tick, tick, tick".

The hand-wound type winds the mainspring by turning the crown manually. In self-winding, the crescent-shaped part called the rotor of the movement rotates when worn or when the watch is shaken, and the mainspring is wound.

You can feel the time while enjoying the expression of brass with a rich texture.



Movement seen through a small window.
When you move, it reflects light and makes a casual statement.


Classical Roman numeral index.


An antique brass case that looks like it has been used.
You can enjoy the change over time in a warm atmosphere unique to handmade products.


Back skeleton specification.
By vibrating the crescent-shaped parts, the mainspring is automatically wound up.


The belt material is made of cowhide with a good texture and is thick and sturdy.
It is durable and has an elegant appearance.


Buckle & belt expression


thick belt. Watanabe's proud hand-stitched belt.


A buckle in a subdued hue.


Whole, front and back (click to enlarge)


A design with a strong presence that will accent your outfit.
Please try to taste the special feeling that is not influenced by fashion.


Perfect for casual style.
(Female: arm circumference approx. 14.5cm)


Presence is also outstanding. (Male: arm circumference approx. 17cm)



Not only for yourself, but also recommended as a gift for birthdays, anniversaries, Christmas, Valentine's Day, White Day, Father's Day, Mother's Day, etc.


You can choose the color of the belt.


The belt is available in 8 colors: black, brown, camel, tanned, white, red, khaki, and navy.

Choose your favorite color belt and make it your one and only watch in the world.


Function/Material/Size

Function/Material [Movement] Mechanical (self-winding), 3 needles [Case] ​​Brass (back cover is stainless steel)
[Belt] Genuine leather (cowhide) hand-stitched [Windshield] Glass
size [Case] ​​Dial diameter: about 32 mm / case diameter: about 40 mm / thickness: about 12.5 mm
[Belt] Width: Approx. 18mm/Thickness: Approx. 4mm/Compatible Arm Circumference: 19cm-14cm
[Weight] about 55g
place of production Made in Japan (Domestic)


Precautions before ordering

Most of our products are made-to-order, so it takes about 3 weeks to 1 month for delivery. Thank you for your understanding.
Christmas, Valentine's Day, and the gift season before White Day tend to take longer to produce. If you are thinking of giving it as a gift, please consider the delivery date before ordering.
It is not waterproof, so please be careful when working on rainy days or around water.
The warranty period is one year from the date of purchase. However, only internal failures are covered by the warranty, and external parts such as cases and belts are not covered by the warranty.


Item Number NW-BAM060-RO-T
Function/Material [Movement] Mechanical (self-winding), 3 needles [Case] ​​Brass (back cover is stainless steel)
[Belt] Genuine leather (cowhide) hand-stitched [Windshield] Glass
size [Case] ​​Dial diameter: about 32 mm / case diameter: about 40 mm / thickness: about 12.5 mm

[Belt] Width: Approx. 18mm/Thickness: Approx. 4mm/Compatible Arm Circumference: 19cm-14cm

[Weight] about 55g

■ Recommended points
Handmade wristwatches made by Mr. Masaaki Watanabe of Watanabe Koubou, a watchmaker who makes watches by hand one by one. Everything is done by hand, from production of watch parts such as cases, dials, and belts to assembly. There is a wide variety of products, from simple designs that can be used for both casual and business purposes, to unique models that incorporate originality and ingenuity.

This watch named "Open Heart" is a self-winding mechanical watch with a small window on the dial.

The movements of the movement can be seen through the small window, and it looks like a human heartbeat. You will be healed by the sound of the second hand that sounds quietly, "Tick, tick, tick, tick, tick, tick".

The hand-wound type winds the mainspring by turning the crown manually. In self-winding, the crescent-shaped part called the rotor of the movement rotates when worn or when the watch is shaken, and the mainspring is wound.

You can feel the time while enjoying the expression of brass with a rich texture.

The belt material is made of cowhide with a good texture and is thick and sturdy. It is durable and has an elegant appearance. Mr. Watanabe's proud hand-stitched belt also has a taste.

A design with a strong presence that will accent your outfit. Please try to taste the special feeling that is not influenced by fashion.

Not only people in their teens, 20s, and 30s, but also people in their 40s and 50s can use it stylishly. The size is suitable for men (for men), women (for women), and unisex. Not only for yourself, but also for birthdays, Christmas (Xmas), Valentine's Day, White Day, Father's Day, Mother's Day, as a matching pair watch, it is also recommended as a gift / present for birthdays. If you would like wrapping, please let us know in the remarks column (free entry column) when ordering.




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