The Tutima M2 Seven Seas S 6156-04 is a 40 mm automatic dive-style watch with a blue dégradé dial, stainless-steel bracelet, and a manufacturer-stated 50-bar pressure test. But there is no verified hands-on examination of this exact reference here, so comfort, finishing, bezel feel, and real-world performance cannot be assessed. The details below distinguish Tutima’s published specifications from impressions that would require direct inspection.
What the Tutima M2 Seven Seas S 6156-04 is
Tutima’s official English product page identifies the 6156-04 as the Seven Seas S, a stainless-steel automatic watch with a blue dégradé dial and steel bracelet with folding clasp. The case is specified as brushed steel, measuring 40 mm in diameter and 12.5 mm thick. Tutima’s 6156-04 product page is the source for these model-specific details.
Published specifications
| Feature | Tutima specification for 6156-04 |
|---|---|
| Case | Brushed stainless steel |
| Diameter and height | 40 mm diameter; 12.5 mm height |
| Dial and bracelet | Blue dégradé dial; stainless-steel bracelet with folding clasp |
| Movement | Automatic Cal. Tutima 330; 25 jewels and polished screws |
| Functions | Date, hour, minute, and sweep seconds |
| Power reserve | 38 hours when fully wound |
| Crystal and crown | Anti-reflective sapphire crystal; screw-in crown |
| Bezel | Unidirectional rotating bezel with graduations and luminous marker |
| Case back | Screw-in |
| Pressure test | 50 bar, as stated by Tutima |
Tutima specifies Super-LumiNova on the indices and a luminous point on the bezel. The 50-bar figure is the manufacturer’s pressure-test rating; it should not be read as a guarantee of suitability for every diving condition or as a substitute for checking the watch’s condition and care requirements.
What “hands-on” can—and cannot—tell you here
No firsthand inspection of the exact 6156-04 is documented. That means there is no supported basis for claims about how the bracelet drapes, whether the watch feels top-heavy, how the bezel clicks, how legible the dial is in changing light, or how accurately the movement runs. Those are practical ownership questions, but specifications alone cannot answer them.
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- Round watch featuring corrugated unidirectional bezel, luminous hands/markers, and magnified date window at 3 o'clock
- 40 mm, Length: 210mm, 23k gold-plated stainless steel case with mineral dial window. Movement Caliber: NH35A
- Japanese automatic movement with analog display
- Gold & Stainless steel tone bracelet with foldover clasp with safety closure
- Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving.
A retailer-hosted video published by SG Watches on 2024-10-20 covers the different reference 6156-06; it does not establish observations or test results for the 6156-04. The 6156-06 presentation is not a substitute for handling the bracelet model covered here.
How the 6156-04 differs from other Seven Seas S references
The Seven Seas S name covers materially different configurations. Tutima’s Japanese collection page lists the 6156-04 with a steel bracelet, 40 mm diameter, 38-hour reserve, 50-bar rating, and a tax-included list price of ¥379,500. The same page lists rubber-strap references 6156-21, 6156-23, and 6156-25 at 40.2 mm, with a 38-hour reserve and tax-included list price of ¥302,500. It also lists steel-bracelet references 6156-10 and 6156-30 at 40.2 mm, 41 hours of reserve, and ¥379,500. These are regional catalog listings, not confirmed current offers or street prices. Tutima Japan’s collection page provides the listed figures.
Rank #2
- Stainless steel case 40mm diameter x 14mm thick; Exhibition case back; Black dial; Luminous hands and hour markers
- NH35A Japanese Automatic movement, 24 jewel; Assembled in Malaysia; Watch weight: 155 grams
- Stainless steel band, 210mm L x 20mm W; Band is adjustable by adding/removing links; Fold over safety clasp
- Mineral crystal; Screw-down crown; Diver stainless steel bezel with black top bezel ring; 200 meter water resistant: Suitable for professional marine activity and surface water sports. Suitable for diving.
A separate German product page lists the 6156-21 with a black FKM rubber strap, 40.2 mm diameter, 12.5 mm height, approximately 38-hour reserve, and a recommended retail price of €1,830. That price is for the 6156-21 in Germany, not the 6156-04, and is not directly comparable to the Japanese tax-included list price. Tutima’s German 6156-21 page documents that sibling configuration.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price and finding the exact reference
For the 6156-04, Tutima Japan’s accessed collection listing gives ¥379,500 including tax. The figure is market- and reference-specific; the cited page does not establish availability or a current transaction price in another country. To check where the watch is sold, use Tutima’s official site and retailer-finder rather than assuming a listing for another Seven Seas S reference is the same configuration.
Rank #3
- Invicta Pro Diver Automatic Champagne Dial Men's Watch 49317
When comparing listings, confirm the full reference number, bracelet or strap, dial color, and movement specification. A photograph or a broad “M2 Seven Seas” label alone may not distinguish the 6156-04 from the rubber-strap 6156-21 or other variants.
Quick Recap
Best Value
- Steel and gold tone stainless steel case 40mm diameter x 14mm thick; Exhibition case back; Black dial; Luminous hands and hour markers
- NH35A Japanese Automatic movement, 24 jewel; Assembled in Malaysia; Watch weight: 152 grams
- Steel and gold tone stainless steel band, 205mm L x 20mm W; Band is adjustable by adding/removing links; Fold over safety clasp
- Mineral crystal; Screw-down crown; Unidirectional stainless steel bezel with black top bezel ring; 200 meter water resistant: Suitable for professional marine activity and surface water sports. Suitable for diving.
- Automatic movement means that this timeless watch powers a quality Japanese-automatic movement with the simple movement of your arm.
Rank #4
- Stainless steel case 42mm diameter x 14.2mm thick; Exhibition case back; Black dial; Luminous hands and hour markers
- NH35A Japanese Automatic movement, 24 jewel; Assembled in Malaysia; Watch weight: 142 grams
- Stainless steel band, 215mm L x 22mm W; Band is adjustable by adding/removing links; Fold over safety clasp
- Mineral crystal; Screw-down crown; Uni-directional stainless steel bezel with black and green top bezel ring; 200 meter water resistant: Suitable for professional marine activity and surface water sports. Suitable for diving.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
