This is an in-depth comparison between two distinctly different 2025 releases from popular Chinese watch manufacturers: the elegant, mechanical 2025 Seagull Business Watch Men's Mechanical Wristwatches 50m Waterproof Leather Valentine Male Watches relogio masculino 6075 (Seagull 6075) and the rugged, high-spec quartz diver, the ADDIESDIVE 2025 New Diving Quartz Watch Men 200m Waterproof Sapphire Stainless Steel Luminous Ceramic Bezel Wristwatch AD2507 (ADDIESDIVE AD2507).

The Seagull 6075 targets the dress watch enthusiast looking for mechanical heritage and classic style, while the ADDIESDIVE AD2507 is an affordable tool watch offering professional-grade durability and modern materials.

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Head-to-Head Comparison: Seagull 6075 vs. ADDIESDIVE AD2507

Feature	2025 Seagull Business Watch Men's Mechanical Wristwatches 50m Waterproof Leather Valentine Male Watches relogio masculino 6075	ADDIESDIVE 2025 New Diving Quartz Watch Men 200m Waterproof Sapphire Stainless Steel Luminous Ceramic Bezel Wristwatch AD2507
Style / Category	Dress / Business (Bauhaus Aesthetic)	Professional Diver / Tool Watch (Cushion Case Homage)
Movement	Automatic Mechanical (Seagull ST17)	Quartz (Japanese Miyota 2115/Seiko 2115)
Water Resistance	5 Bar (50m)	20 Bar (200m) with Screw-Down Crown
Crystal	Sapphire Crystal	Sapphire Crystal (with AR coating)
Case Diameter	40mm	43.8mm (Case), 41.5mm (Bezel)
Thickness	Approx. 10mm	Approx. 11.8 - 12mm
Bezel	Fixed (Smooth)	120-Click Unidirectional Rotating (Ceramic Insert)
Lume	Minimal (Standard)	Excellent (Ceramic Bezel Pip + Indices - likely BGW9)
Case Material	316L Stainless Steel	316L Stainless Steel
Strap / Bracelet	Genuine Leather Strap (often includes a Milanese steel strap)	Solid Link Stainless Steel Bracelet
Approximate Price	US $85 - $160	US $55 - $80

Note on Pricing: Prices are approximate street/sale prices found during research and are subject to change based on vendor, sale events, and market.

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In-Depth Feature Comparison

1. Movement and Precision

The core difference lies in the engine of each watch.

• Seagull 6075 (Mechanical): This watch is powered by the Seagull ST17 automatic mechanical movement. Seagull is a historic and highly regarded Chinese movement manufacturer, and the ST17 is a known workhorse, featuring automatic winding and a distinct small seconds sub-dial at the 6 o'clock position. The main appeal here is the craftsmanship and the 'sweeping' second hand of a mechanical movement, which typically requires maintenance but offers a traditional watch experience. Its accuracy is expected to be good for a mechanical watch in this price bracket, though less precise than quartz.
• ADDIESDIVE AD2507 (Quartz): The ADDIESDIVE 2025 New Diving Quartz Watch Men 200m Waterproof Sapphire Stainless Steel Luminous Ceramic Bezel Wristwatch AD2507 utilizes a reliable Japanese Quartz Movement (Seiko/Miyota 2115). The key advantage of quartz is superior accuracy and zero maintenance (other than battery changes every few years). For a tool watch where reliability is paramount, quartz is often the preferred choice.

2. Design and Aesthetics

The watches are designed for completely different environments.

• Seagull 6075: This watch embodies a Bauhaus-inspired business/dress aesthetic. It features a clean, minimalist dial, a slender 40mm case diameter, and a slim 10mm thickness, making it ideal for sliding under a dress cuff. The inclusion of a small seconds sub-dial adds a vintage, elegant flair. It typically comes on a leather strap, emphasizing its formal nature.
• ADDIESDIVE AD2507: A robust Professional Quartz Diver with a classic "Turtle" or "Captain Willard" cushion case shape, which is inherently comfortable despite the larger 43.8mm case diameter. Its functional design includes a highly scratch-resistant ceramic bezel insert with a 120-click unidirectional rotation for dive timing, and a substantial stainless steel bracelet, cementing its status as a tool watch.

3. Durability and Water Resistance

This is the most significant point of divergence.

• Seagull 6075: It is rated for 50m (5 Bar) water resistance. This is suitable only for everyday scenarios like hand washing and rain splashes—it is not safe for swimming or diving. The dress design and leather strap reinforce its non-aquatic function.
• ADDIESDIVE AD2507: It boasts a professional 200m (20 Bar) water resistance, complete with a screw-down crown and caseback. This specification means the watch is genuinely suitable for recreational and saturation diving, making it far more rugged and capable of handling any water activity, from swimming to snorkeling.

4. Materials and Finishing

Both watches offer premium materials often associated with higher price points.

• Shared Materials: Both watches feature Sapphire Crystal for excellent scratch resistance on the dial window, and 316L Stainless Steel cases, indicating high-quality construction.
• ADDIESDIVE AD2507 Advantages: It includes a Ceramic Bezel Insert (superior to aluminum in scratch resistance) and BGW9 Super-LumiNova or similar compound for exceptional night visibility (lume). The bracelet is solid link, though the clasp is noted as a basic pressed metal type in reviews.
• Seagull 6075 Considerations: While the case and crystal are excellent, reviews often mention the included genuine leather strap is of low quality and recommend an upgrade to fully appreciate the watch head.

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Pros and Cons

2025 Seagull Business Watch Men's Mechanical Wristwatches 50m Waterproof Leather Valentine Male Watches relogio masculino 6075

PROS	CONS
Mechanical Movement: Authentic automatic watch experience (Seagull ST17).	Low Water Resistance (50m): Unsuitable for swimming or diving.
Dress/Bauhaus Aesthetic: Elegant, thin, and perfect for formal or business wear.	Low Quality Strap: The included leather strap is frequently cited in reviews as needing replacement.
Thin Profile (10mm): Sits comfortably and discreetly on the wrist.	Less Durable: Built for desk diving, not actual tool use.
Affordable Sapphire: Excellent scratch resistance for a dress watch at this price.	Accuracy: Inherently less accurate than a quartz movement.

ADDIESDIVE 2025 New Diving Quartz Watch Men 200m Waterproof Sapphire Stainless Steel Luminous Ceramic Bezel Wristwatch AD2507

PROS	CONS
Extreme Durability (200m WR): Professional dive watch specs with screw-down crown.	Larger/Thicker Case: Case is 43.8mm wide and visually chunky due to the cushion shape.
High-End Materials: Ceramic bezel, Sapphire crystal, 316L steel.	Pressed Clasp: The bracelet clasp is typically a basic, pressed metal type (though the links are solid).
Quartz Accuracy: Highly accurate and maintenance-free Japanese movement.	Less Enthusiast Appeal: Lacks the romanticism and visible mechanics of an automatic watch.
Excellent Value: Offers true professional specifications for a remarkably low price (often under $80).	Homage Design: Design is a clear, yet well-executed, homage to the Seiko Turtle/Willard.

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VERSUS Verdict: Who Should Buy What?

These two watches represent a classic dichotomy in watch collecting: Style & Tradition vs. Function & Performance.

Buy the 2025 Seagull Business Watch Men's Mechanical Wristwatches 50m Waterproof Leather Valentine Male Watches relogio masculino 6075 if...

You are a watch enthusiast who prioritizes mechanical movement, heritage, and traditional design. This watch is for those who appreciate the subtle, minimalist elegance of the Bauhaus style and require a sophisticated timepiece for the office, formal events, or daily wear where water exposure is minimal. It's a true 'desk diver'—perfect for those who value the ST17 engine and the tradition of watchmaking over rugged utility.

Buy the ADDIESDIVE 2025 New Diving Quartz Watch Men 200m Waterproof Sapphire Stainless Steel Luminous Ceramic Bezel Wristwatch AD2507 if...

You need the maximum performance and durability for the lowest possible price. This is the ultimate affordable "set it and forget it" tool watch. It is perfect for active individuals, travelers, or anyone who frequently engages in water sports, swimming, or manual labor. You value the ruggedness of 200m water resistance, the accuracy of quartz, and the superior scratch resistance provided by the ceramic bezel and sapphire crystal over the romanticism of a mechanical movement.