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    Orient Star

    Most Orient Star watches use a 20 mm lug width: 186 of the 318 Orient Star references with a listed width in our database (58%).

    Lug widths at Orient Star

    Orient Star collections

    The story ยท Since 1964

    The Orient Star story

    1. 1964 Orient Star's maker counts the Olympia Calendar Diver of 1964, water resistant to 40 m, as the brand's first diver's watch; its timeline places it after the Dynamic of 1957, launched with hour, minute and second hands on the central axis. In February 2026 the M42 Diver 1964 1st Edition F6 Date 200m, 700 pieces, reimagined the 1964 design with diver's specifications compliant with ISO 6425 for the 75th anniversary.
    2. 1996 As mechanical watches came back after the quartz years, Orient engineers spent about two years studying Swiss literature to build a power reserve indicator, launched on an Orient Star in 1996. It became a standard Orient Star feature and was followed by World Time (1999), Semi Skeleton (2003) and GMT (2010) models.
    3. 2017 The year Orient merged its business into Seiko Epson, Orient Star launched the Mechanical Moon Phase, with a moon phase and a semi-skeleton dial; the maker presents it as the symbol of the new collaboration.
    4. 2025 Orient Star introduced the M45 F8 Mechanical Moon Phase Hand Winding in 2025, the brand's first manually wound moon phase, on the hand-wound calibre F8A62 with a silicon escape wheel and a 70-hour power reserve. SJX noted the watch has no seconds hand.
    5. 2026 Seiko Epson absorbed Orient Watch Co., Ltd., dormant since it transferred its business in 2017, on February 1, 2026, ending the company founded on July 13, 1950; the Orient and Orient Star brands carry on inside Epson. The same week Orient Star opened its 75th anniversary with an M34 F8 Date limited to 255 pieces, its first meteorite dial.
    6. 2026 Actor and artist Masaki Suda became Orient Star's brand ambassador on October 6, 2026; AdverTimes reports he is the brand's first ambassador for the Japanese market. The key visuals show him with the 75th anniversary Orient Star Skeleton (RE-BR0001N) and the Three Hand (RE-BQ0003S), first model of the Sakigake Design Project.

    Orient Star ambassadors over the years

    Masaki SudaActor and musician; Orient Star brand ambassadorFrom 2026

    Became Orient Star's brand ambassador in October 2026 for the brand's 75th anniversary, in a campaign first run in Japan, Thailand, the Philippines and Taiwan; AdverTimes calls it the brand's first ambassador appointment for Japan.

    Source: Orient Star press release (Seiko Epson), AdverTimes (Sendenkaigi)

    More Orient Star references, by line

    Lines without a guide page yet: every reference we list for them, with its strap size.

    M34 F7 Mechanical Moon Phase

    • m34 f7 mechanical-moon-phase RE-AY0202A00B20 mm
    • m34 f7 mechanical-moon-phase RK-AY0201A20 mm

    FAQ

    What lug width do Orient Star watches use?

    20 mm is the most common (58% of Orient Star references with a listed width), followed by 21 mm and 14 mm.

    Do all Orient Star watches take the same strap size?

    No. Orient Star uses 6 different lug widths across its collections, so check your exact model or reference.

    Who are Orient Star's ambassadors?

    Over the years Orient Star has partnered with Masaki Suda (from 2026).

    Help

    What is lug width?

    The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.

    Measure it in 30 seconds

    1. Take the strap off, or look at the back of it: many straps print their width.
    2. Measure the inside gap between the lugs with a caliper or a millimetre ruler.
    3. Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.

    Strap, quick release or system?

    Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.