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Home/Browse/Merkur/MONOBLOCK TUNA
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Merkur MONOBLOCK TUNA
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Merkur · Dive

Merkur MONOBLOCK TUNA

Diver

$279In stock

Case

Diameter
47mm
Thickness
17mm
Lug-to-lug
48mm
Lug width
20mm
Material
Stainless Steel
Water resistance
200m

Crystal & dial

Crystal
Sapphire

Movement

Caliber
Seiko NH35
Type
Automatic
Power reserve
40h

Seiko

Seiko's third-party supply version of the 4R35, sold to external watch brands and modders worldwide. Adds hacking and hand-winding over the 7S26 it effectively replaced. The NH35 has become the default automatic movement for watch modding and microbrand watches, thanks to its low cost, reliability, and wide availability of compatible parts including dials, hands, and cases in the Seiko-compatible format.

Design language

Case shape
round
Dial style
standard
Bezel
rotating_unidirectional
Bracelet
leather_strap

AI-detected from the product image

Dive collection · 4 watches

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24 Rubis Green38mm
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2 colorways

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02The connection engine

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03The community take

Owners talk.

“
In a nutshell

The Merkur MONOBLOCK TUNA is an automatic diver watch, with a 47mm stainless steel case, 17mm thick, powered by the Seiko NH35 movement and a 40-hour power reserve. Water resistance is rated to 200m, under a sapphire crystal. Manufacturer MSRP is $279.

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05The discussion

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