Seiko Prospex Marinemaster Professional 300m "Tuna"

Ref. SBBN031 · Discontinued

The original

Price: —
Case: Steel
Diameter: 48 mm
Lug to lug: —
Thickness: 14.7 mm
Lug width: 22 mm
Water resistance: 300 m
Crystal: Hardlex
Movement: Seiko 7C46Quartz

Its homages

In the database: 14
Price range: $119–$235
Cheapest: —

The 300m quartz "Tuna" with steel shroud, the Tuna most homages copy. It was a Japanese-market model (no US list price; Worn & Wound quoted about $1,300 in 2017) and is no longer on Seiko's US site. Seiko still makes other Tunas (Prospex 1000m and solar versions) in several sizes.

Homages by price

Sizes in brackets are the difference from the original.

Homage	Price from	Share of original	Dia. mm	L2L mm	Thick mm	WR m	Crystal	Movement
Addiesdive AD2522	$119	—	47.5 (−0.5)	44.7	15 (+0.3)	300	Sapphire	Miyota 8215
Addiesdive H5C	$129	—	47.5 (−0.5)	44.7	15 (+0.3)	300	Sapphire	Seiko NH35A
Addiesdive AD2098	$139	—	41 (−7)	44.5	15 (+0.3)	300	Sapphire	Seiko NH35A
Addiesdive AD2509	$139	—	41 (−7)	44.5	15 (+0.3)	300	Sapphire	Seiko NH35A
Heimdallr HMSG11 Tuna Can	$139	—	—	47	14.5 (−0.2)	200	Sapphire	Hangzhou 2565A
Addiesdive AD2090	$149	—	41 (−7)	44.5	15 (+0.3)	300	Sapphire	Seiko NH35A
Addiesdive H5	$149	—	47.5 (−0.5)	44.7	15 (+0.3)	300	Sapphire	Seiko NH35A
Steeldive SD1975 Tuna	$149	—	47.5 (−0.5)	44	15 (+0.3)	300	Sapphire	Seiko NH35A
Pagani Design PD-1695	$161	—	45 (−3)	—	15 (+0.3)	300	Sapphire	Miyota 8215
Heimdallr Titanium Tuna Can	$189	—	—	47	14.5 (−0.2)	200	Sapphire	Hangzhou 2565A
Thorn T012	$209	—	47 (−1)	—	14.8 (+0.1)	200	Sapphire	Seiko NH34A
San Martin SN003 47mm (NH36)	$218	—	47 (−1)	47	15.2 (+0.5)	300	Sapphire	Seiko NH36A
Thorn T015	$219	—	47 (−1)	—	14.2 (−0.5)	200	Sapphire	Seiko NH35A
San Martin SN003 47mm (NH35)	$235	—	47 (−1)	—	15.2 (+0.5)	300	Sapphire	Seiko NH35A

Sources

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