Rotary Seamatic 100 Automatic
How might this watch look on my wrist? A 3D representation of Rotary Seamatic 100 Automatic. Check retailer page for actual dimensions and specifications.
Scroll or drag to turn the wrist. Shown to scale on a typical men’s wrist (17.5 cm), lug to lug 46 mm (measured from the photo).
A 40mm automatic wristwatch with a gold PVD finished stainless steel case and sunray white dial. The Seamatic 100 features a screw-down crown and 100 metres water resistance for everyday durability. Sapphire crystal resists scratching whilst Super-Luminova coated hands and indices provide legibility in low light conditions. The Miyota 8215 automatic movement is visible through an exhibition caseback, allowing sight of the mechanical beating heart. A solid milled clasp secures the bracelet to the wrist with confidence.
The lug-to-lug measurement of 47mm ensures balanced proportions on a variety of wrist sizes. Construction combines practical specifications with refined finishing touches, positioning this as a capable daily wearer suitable for both formal and casual settings. The combination of robust water resistance and proven automatic calibre makes it a straightforward tool watch without unnecessary complications.
The Rotary Seamatic RGB10036/06 is listed on WatchShopper as a 40 mm gold PVD stainless steel automatic watch with a white dial, a date display, sapphire crystal, and 100 m water resistance. It runs on the Miyota 8215 calibre and comes on a gold stainless steel bracelet. On 20 October 2026 the lowest UK price was £279.00 at F.Hinds, in stock, with free delivery and 30-day returns. That is above its 193-day tracked average of £274.00.
WatchShopper has tracked the Rotary Seamatic 100 Automatic across 2 UK retailers for 193 days. In that time the lowest recorded price was £269.00 at Rotary on 10 April 2026, and the highest was £279.00 at F.Hinds. The average tracked price is £274.00. At £279.00, the current best price is above its tracked average.
| Lowest tracked price | £269.00 |
|---|---|
| Highest tracked price | £279.00 |
| Average tracked price | £274.00 |
| Current best price | £279.00 |
| Tracking since | 10 April 2026 |
At £279 this watch is among the cheapest for an automatic watch with a 38–42 mm case: 11% of the 1,509 we track from every brand cost less. 79% of the 806 Rotary watches we track cost less than this one. This is the 12th cheapest of the 32 versions of the Seamatic we list.
