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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
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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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2 colorways

Alternatives

Market

Retail$279

No forum listings recorded for this watch yet.

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Community

“

Merkur MONOBLOCK TUNA owners widely praise its excellent finishing, often noting it surpasses typical examples, and appreciate the tactile, satisfying 60-click bezel action on the titanium case. The watch is described as robust, handling snow exposure and submersion well, with reliable performance and accuracy around +2 to +3 seconds per day. Some owners highlight the monoblock case construction and sapphire bezel insert options, while others enjoy the beautiful color and killer styling on an oyster bracelet. The quality is considered surprisingly good for the price. On balance, owners rate the Merkur MONOBLOCK TUNA highly for its exceptional finishing and reliable performance at its price point.

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