Orient Stretto Semi Skeleton RA-AR0004S Automatic Watch – White Open Heart Dial, Small Seconds, Sapphire Crystal, 40.8 mm, 50 m WR, Cal. F6S22

Product Description

Part of the Japanese manufacturer’s acclaimed contemporary line, the Orient Stretto Semi Skeleton RA-AR0004S redefines the modern dress watch by combining exposed mechanical architecture with a highly refined geometric design.

Its structured white dial stands out for its balanced, asymmetrical dual-window configuration: at 9 o’clock, a circular Open Heart aperture offers an unobstructed view of the rhythmic beat of the balance wheel and the movement’s jewels; at 6 o’clock, an interlocking subdial houses the small seconds hand, lending the dial a technical yet elegant visual dynamism. Unlike conventional dress watches, this model features luminescent hour markers and hands, ensuring immediate readability in low light without compromising its understated aesthetic.

The entire watch is protected on the front by a flat sapphire crystal offering maximum scratch resistance. Its stainless steel case, measuring 40.8 mm in diameter and 48.0 mm in length from lug to lug (lug-to-lug), offers a solid and ergonomic fit on the wrist. Through the screw-down case back with a transparent crystal, the in-house Orient F6S22 automatic caliber is on display, equipped with manual winding and a hacking seconds function. With improved water resistance of 50 meters (5 bar) and a distinguished 22 mm genuine leather strap, it is a versatile timepiece designed for both formal settings and the most demanding everyday use.

Highlights

• Semi-Skeleton Design with Small Seconds: Open Heart window at 9:00 to view the mechanical escapement and a sub-dial dedicated to the seconds hand at 6:00.
• Flat Sapphire Crystal: High-end front protection virtually immune to surface scratches and wear from continuous use.
• Orient F6S22 in-house caliber: A 22-jewel automatic mechanical movement manufactured in Japan, featuring manual winding capability and a seconds-stop mechanism for precise synchronization.
• Functional luminescence: Hands and hour markers treated with high-contrast phosphorescent material for visibility in low-light conditions.
• Enhanced water resistance of 50 m (5 bar): Water resistance superior to that of standard dress watches, suitable for rain, hand washing, and accidental immersion.
• Transparent case back (See-Through): Screw-down case back with a crystal display window showing the finishes and the oscillating weight.
• SUS304 stainless steel case: Solid and durable construction with alternating polished and satin-brushed finishes.

Technical Specifications

Feature Details

Reference RA-AR0004S / RA-AR0004S10B (JDM Equivalent: RN-AR0004S)

Collection Orient Contemporary / Stretto Semi-Skeleton Series

Caliber Orient-manufactured mechanical automatic Cal. F6S22 (Made in Japan)

Complications Open Heart (open heart at 9:00), small seconds at 6:00

Functions Hours, minutes, small seconds, manual winding, and hacking seconds

Jewels / Frequency 22 jewels / 21,600 vph (3 Hz)

Power reserve Over 40 hours

Case Material SUS304-grade stainless steel

Dimensions Diameter 40.8 mm | Length (lug to lug) 48.0 mm | Lug width 22 mm

Crystal High-strength flat sapphire (Scratch-Resistant Sapphire)

Case Back Screw-down with transparent crystal window (exhibition case back)

Dial White with a multi-layered texture, faceted applied hour markers, and a balance wheel aperture

Luminescence Luminescent material on hour hands and hour markers

Strap 22 mm genuine brown/black leather strap with a steel pin buckle

Water Resistance 5 ATM / 50 m (resistant to heavy splashes, showers, and rain)