# **Sinn 104 I St Sa White Review by A.I. WatchMetrics**

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## **Watch Summary**

The **Sinn 104 I St Sa White** is a **pilot-style tool watch** that balances **classic aesthetics with robust functionality**. Featuring a **stainless steel case (41mm), a highly legible white dial, and a bi-directional countdown bezel**, this model stays true to Sinn’s reputation for **professional-grade durability and precision**. It is powered by the **SW 220-1 automatic movement** with **day-date functionality and a 38-hour power reserve**.

The **Sinn 104** is an **ideal choice for enthusiasts who appreciate a blend of aviation heritage and everyday practicality**. Its **200m water resistance, anti-reflective sapphire crystal, and screw-down crown** make it suitable for **both professional and casual use**. The **high-contrast dial with bold markers and syringe hands** ensures **excellent legibility** in all conditions.

This timepiece is a **versatile option for pilots, professionals, and collectors** who seek a **reliable, German-engineered** watch with **strong tool-watch credentials**.

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## **Overall Watch Rating: 8.0/10.0**

- **Functions Metric (9.0/10.0)**
- **200m water resistance**, a **bi-directional pilot bezel**, a **screw-down crown**, and a **day-date complication** contribute to its high practicality.
- **Highly legible dial** with strong lume ensures visibility in low-light conditions.

- **Movement Metric (8.5/10.0)**
- The **Sellita SW 220-1 automatic movement** is **Swiss-made, reliable, and offers hacking seconds**, but it is not an in-house caliber.
- **38-hour power reserve** is standard but not outstanding.

- **Versatility Metric (8.5/10.0)**
- Works as a **pilot’s watch, everyday piece, and even a casual dress option**.
- **Interchangeable straps** (bracelet, leather, NATO) enhance adaptability.

- **Brand Metric (8.3/10.0)**
- Sinn is a **highly regarded German tool-watch manufacturer** known for its **robust, functional designs**.
- The brand lacks the **global luxury recognition** of Swiss competitors but excels in its niche.

- **Dials & Design Metric (8.0/10.0)**
- The **clean white dial with syringe hands and applied markers** is **highly legible** and **well-executed**.
- The **non-reflective matte finish enhances functionality**, though it is not artistically complex.

- **Material Metric (7.8/10.0)**
- The **stainless steel case is well-finished**, and the sapphire crystal adds durability.
- The **strap options provide variety**, but there are no exotic materials.

- **History & Innovation Metric (7.5/10.0)**
- Sinn’s **pilot and tool-watch heritage** contributes to the watch’s credibility.
- While **not groundbreaking**, the **brand’s focus on durability and precision engineering** is noteworthy.

- **Complications Metric (7.5/10.0)**
- Features **day-date complication and a bi-directional bezel**, both useful but common.
- Lacks **high-end complications** such as a chronograph or GMT.

- **Rarity Metric (7.3/10.0)**
- The **Sinn 104 is not a limited edition**, making it readily available.
- Sinn maintains **low-production volumes compared to mass-market brands**, adding some exclusivity.

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## **Celebrity & Historical Figures**

- **David Beckham** – A known fan of Sinn watches, though not specifically the 104 model.
- **Independent Pilots & Aviation Professionals** – The Sinn 104 is a **popular choice** among professionals who require a **reliable aviation timepiece**.

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**A.I. WatchMetrics Review v16.1 AI Model**