### The Sporty Watch with Bold Personality

The SBSA309 breaks with traditional sobriety by featuring a vibrant orange dial that transforms the classic 42.5 mm format into a style statement. The combination with a black silicone strap creates a perfect sporty contrast for those who want to stand out.

### Calibre 4R36 - Mechanical Reliability

**Movement Specifications:**

- Automatic with optional manual winding

- 24 jewels for smooth operation

- 21,600 vibrations per hour (3 Hz)

- 41-hour power reserve

- Hacking seconds

- Quick date and day change

### Vibrant Orange Design

**High-Impact Dial**

- Bright orange with sunray finish

- Exceptional visibility in any environment

- Applied indices with optimal contrast

- Wide hands for instant readability

- Day-date window with subtle frame

**LumiBrite Luminescent System**

- Long-lasting phosphorescent material

- Generously applied to hands and indices

- Perfect contrast with orange dial

- Guaranteed night-time visibility

### Sporty construction

| Component | Specification | Practical advantage |

|---|---|---|

| Case | Brushed 316L steel | Extreme durability |

| Diameter | 42.5 mm | Ideal sporty presence |

| Thickness | 13.9 mm | Balanced proportions |

| Glass | Hardlex mineral | Superior impact resistance |

| Crown | Screw-down | Water resistance guaranteed |

### Premium Silicone Strap

**Advantages of Black Silicone:**

- Extreme flexibility and comfort

- Water and sweat resistant

- Maintenance-free

- Perfect contrast with orange

- Ideal for sports and activities

- Hypoallergenic and durable

- Easy to clean with water

### Full functionality

**Sports features:**

- **100 m water resistance**: Swimming and water sports

- **Anti-magnetic**: Protection against everyday fields

- **Bilingual day/date**: Complete information

- **Protected crown**: Robust design

- **No battery**: Perpetual mechanical energy

### The Orange Factor

**Why choose orange:**

- Maximum visibility (safety colour)

- Unique and distinctive personality

- Energy and visual dynamism

- Easy to find

- Conversation guaranteed

- Sporty and adventurous spirit

### Style Combinations

**Ideal for:**

- Sportswear and athleisure

- Casual weekend look

- Outdoor activities

- Water sports

- Modern urban style

- Contrast with neutral tones

### Specific Applications

**Perfect Scenarios:**

- Running and cycling (high visibility)

- Water sports (waterproof strap)

- Gym (silicone does not absorb sweat)

- Outdoor adventures (rescue colour)

- Casual everyday use (statement piece)

### Simplified Maintenance

**Minimum Care:**

- Rinse strap after sea/chlorine

- Mechanical service every 5-7 years

- Crown always tightly screwed

- Clean with neutral soap

- Avoid changing date between 9 p.m. and 3 a.m.

### Strap versatility

**Customisation options:**

- Compatible with any 20 mm strap

- NATO in complementary colours

- Alternative textured rubber

- Perlon for summer

- Quick change without tools

### Technical specifications

- **Brand**: Seiko

- **Collection**: 5 Sports

- **Reference**: SBSA309

- **Movement**: Automatic 4R36

- **Dimensions**: 42.5 × 13.9 mm

- **Materials**: Steel and silicone

- **Water resistance**: 100 metres

- **Dominant colour**: Orange/Black

### Value Proposition

**A Watch That Offers:**

- Personality without compromising quality

- Reliable mechanics with bold style

- Real sporting versatility

- Durability for intensive use

- Affordable price for an automatic watch

### Target Audience

**Perfect for those who:**

- Want to stand out without ostentation

- Practice sports regularly

- Value functionality with style

- Want their first automatic watch to be different

- Appreciate vibrant colours

The SBSA309 proves that a sports watch can be technically competent and visually striking. The orange dial is not just aesthetic: it is a statement of confidence and a tool watch that is not afraid to be seen. A piece for those who live actively and want their watch to reflect that energy.