Orient Automatic Watch RA-AC0L04L00B

Items Description

The Orient Automatic Watch RA-AC0L04L00B is a mechanical dive watch engineered for underwater exploration and demanding outdoor use. Built to meet ISO 6425 dive standards, this timepiece delivers professional-grade reliability with a 200-metre water resistance rating and a rugged 45mm stainless steel case. The M-Force series represents Orient's commitment to robust, functional tool watches that combine in-house automatic movements with purposeful design.

 

At the heart of this model sits a self-winding mechanical movement with a 40-hour power reserve, viewable through an exhibition case back that showcases Orient's manufacturing capability. The watch pairs a deep blue dial with a durable silicone strap, creating a balanced profile that transitions from recreational diving to daily wear without compromise. The unidirectional bezel and sapphire crystal with anti-reflective coating provide the essential durability expected from a serious dive instrument.

 

Key Advantages of the Orient Automatic Watch RA-AC0L04L00B M-Force Automatic Blue Dial 200M Men's Diver Watch

 

1. Professional-Grade Dive Certification

The RA-AC0L04L00B carries ISO 6425 compliance, the international standard for dive watches. This certification confirms that the watch has passed rigorous testing for water resistance, shock resistance, and legibility under low-light conditions, making it a trustworthy companion for recreational divers and snorkelers.

 

• Water Resistance: Rated to 200 metres, suitable for professional marine activity and serious surface water sports.
• ISO 6425 Compliance: Verified durability against thermal shock, magnetism, and saltwater exposure.
• Unidirectional Bezel: Rotates in one direction only to prevent accidental timing miscalculations during dives.
• Screw-Down Crown: Provides an additional seal against water ingress at depth.

 

2. In-House Automatic Movement with 40-Hour Reserve

Orient manufactures its movements in-house in Japan, and the RA-AC0L04L00B is powered by a dependable automatic calibre that requires no battery. The movement winds itself through the natural motion of the wearer's wrist and offers a 40-hour power reserve when fully wound, ensuring the watch continues running overnight or through a weekend of non-use.

 

• Self-Winding Operation: Eliminates the need for battery replacements or daily manual winding.
• 40-Hour Power Reserve: Maintains accurate timekeeping when the watch is not being worn.
• Exhibition Case Back: Displays the decorated automatic movement in motion, revealing the balance wheel and rotor.
• Japanese Craftsmanship: The movement is manufactured at Orient's own production facilities, ensuring quality control throughout assembly.

 

3. Sapphire Crystal with Anti-Reflective Coating

Visibility is critical for any dive watch, and the RA-AC0L04L00B uses a sapphire crystal treated with an anti-reflective layer to minimize glare in bright conditions. Sapphire ranks high on the Mohs scale of mineral hardness, making this crystal highly resistant to scratches from daily wear, beach sand, or accidental contact with hard surfaces.

 

• Scratch Resistance: Sapphire offers superior hardness compared to mineral glass or acrylic crystals.
• Anti-Reflective Treatment: Improves dial readability underwater and in direct sunlight.
• Clear Dial View: The blue dial is protected by a flat crystal that maintains optical clarity at various angles.

 

4. The Blue Dial and Luminous Readability

The deep blue dial distinguishes this variant from other M-Force models, offering a refined alternative to the standard black versions. Applied hour markers and hands are coated with luminescent material that charges in daylight and emits a steady glow in darkness, preserving legibility during night dives or in low-light environments.

 

• Blue Dial Aesthetic: Provides a visual contrast against the stainless steel case and silicone strap, suitable for both wetsuit and business casual settings.
• Luminescent Markers: Hour indices and hands glow after exposure to light for quick reading in dark conditions.
• Date Display: Positioned at 3 o'clock with a magnifying cyclops lens for easy reading.

 

5. Durable Silicone Strap Design

The RA-AC0L04L00B is fitted with a black silicone strap that offers flexibility and comfort in both wet and dry conditions. Unlike metal bracelets that can pull arm hair or leather straps that degrade with moisture, this synthetic material dries quickly and maintains its shape after prolonged exposure to salt water or chlorinated pools.

 

• Comfortable Fit: Silicone conforms to the wrist's contours, reducing pressure points during extended wear.
• Water-Resistant Material: Does not absorb moisture, preventing odour and material breakdown over time.
• Secure Clasp: A stainless steel buckle holds the strap firmly in place, even during active movement.

 

The Orient Automatic Watch RA-AC0L04L00B is best suited for divers, snorkellers, and outdoor enthusiasts who need a mechanical timepiece that performs reliably in water and rugged environments. For those who appreciate a larger 45mm case presence and the convenience of an automatic movement, this M-Force model delivers professional specifications without requiring a matching budget.

Specifications of Orient Automatic Watch RA-AC0L04L00B

Brand Name	Orient
Model number	RA-AC0L04L00B
Part Number	RA-AC0L04L00B
Item Shape	Round
Dial window material type	Sapphire Crystal
Clasp	Deployment Clasp
Case material	45 mm
Case diameter	47 millimeters
Case Thickness	14 millimeters
Band Material	Silicone
Band width	5
Band Color	Black
Dial color	Blue
Item weight	1.76 Ounces
Movement	Automatic
Water resistant depth	200 Meters
Display Type	Analog

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Specifications
[Brand Name ]	Orient
[Model number ]	RA-AC0L04L00B
[Part Number ]	RA-AC0L04L00B
[Item Shape ]	Round
[ Dial window material type ]	Sapphire Crystal
[Clasp ]	Deployment Clasp
[Case material ]	45 mm
[Case diameter ]	47 millimeters
[Case Thickness ]	14 millimeters
[Band Material ]	Silicone
[Band width ]	5
[Band Color ]	Black
[Dial color ]	Blue
[Item weight ]	1.76 Ounces
[ Movement ]	Automatic
[ Water resistant depth ]	200 Meters
[Display Type ]	Analog

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