ORIENT STAR Mechanical Moon Phase with Nebula-Inspired Mother of Pearl Dial

Japanese watch brand ORIENT STAR presents two new Mechanical Moon Phase watch models from its Contemporary Collection featuring mother of pearl dials.

Celebrating its 70th anniversary in 2021, the new models join the popular ORIENT STAR flagship, Mechanical Moon Phase, combining innovative designs with high-performance in-house mechanical movements.

The Mechanical Moon Phase, which first launched in 2017, features ORIENT STAR’s distinctive design elements, including a power reserve indicator at 12 o’clock, the semi-skeleton window at 9 o’clock that shows the inner workings of the mechanical movement, and the moon phase display at 6 o’clock with a date hand.

In 2020, an unconventional new model was released from the Contemporary Collection. The unique design was inspired by the concept of viewing the Earth from behind the Moon. The moon phase display at 6 o’clock represents the Moon and the semi-skeleton window at 9 o’clock as the Earth.

The latest models feature mother of pearl dials, drawing on the natural patterns of pearl oyster shells with their iridescent colors and depth to bring out a three-dimensional aesthetic.

ORIENT STAR Mechanical Moon Phase with Nebula-Inspired Mother of Pearl Dial
Image credit: ORIENT

The beautifully colored dials, a distinctive feature of ORIENT STAR watches, give a unique luster, further reinforcing the overall concept of “the universe”. The designs of the ORIENT STAR 70th anniversary models take particular inspiration from the image of a nebula.

The limited-edition model of 700 pieces worldwide has a serial number and special 70th anniversary design on the case back.

The green hues of the mother of pearl dial, lighter in the middle and darker at the top and bottom, contrast with the dark green power reserve indicator, semi-skeleton window, and moon phase display that provide an incredible sense of depth, inviting the wearer to explore the vastness of outer space.

The regular model features a luxurious white mother of pearl dial with a matching white power reserve indicator, semi-skeleton window, and moon phase display accented with striking blue hands, reminiscent of heavenly celestial patterns.

These two designs are encased in sapphire crystal glass with anti-reflective coatings on both sides, which provides a clear view of the entire watch dial. Both models have ceramic accents on the side of the crown as a stylish design feature.

The two models are powered by in-house automatic mechanical caliber F7M63 with 50-hour power reserve known for its stable precision and reliability.

This complex mechanical engine can be viewed through the transparent sapphire crystal case back. The case has water resistance to 10 bar and, together with the bracelet, uses high-quality SUS316L stainless steel with superior corrosion resistance. The modern case with its tasteful design details includes “Sallaz” polishing, creating a smooth mirrored surface which reflects without distortion.

Technical details

Collection: Contemporary
Series name: Mechanical Moon Phase


Automatic (with hand winding) mechanical in-house caliber F7M63 made in Japan
Power reserve: 50 hours
Accuracy: +15 seconds ~ -5 seconds per day
Second hand hacking
22 jewels

Stainless steel (SUS316L)
Crown: Stainless steel (SUS316L) and ceramics
Case diameter: 41.0 mm
Thickness 13.1 mm
Front Glass: Sapphire crystal (SAR (Super anti-reflective) coating)
Case back glass: sapphire crystal
Case back of reference RE-AY0006A features 70th anniversary limited edition and serial number engraving
Water resistance to 10 bar (100 m)

RE-AY0005A: MOP White
RE-AY0006A: MOP Green
Luminous Light

Moon phase function (moon phase adjusting device attached)
Power reserve indicator

Stainless steel (SUS316L) / trifold deployant buckle with push button / width 21mm

RE-AY0005A: non limited
RE-AY0006A: 70th anniversary, 700 pieces limited edition