Rotary Seamatic 300 42mm automatic watch, green dial
RGB05430/78
£299
Price at Goldsmiths, checked 28 October 2026. Prices can change: Goldsmiths' page has the final word.
This version: green dial. Goldsmiths has 2 versions of the Seamatic 300 in stock: compare them.
42mmAutomatic300 m water resistantStainless steelMen's
You'll buy on Goldsmiths' website. We may earn a commission. How this works
Specifications
| Brand | Rotary |
|---|---|
| Model | Seamatic 300 |
| Reference | RGB05430/78 |
| Gender | Men's |
| Style | — |
| Case size | 42mm |
|---|---|
| Lug to lug | — |
| Case material | Stainless steel |
| Bezel | Ceramic |
| Dial colour | Green |
| Strap | Stainless steel |
Will 42mm suit your wrist? Check your size
| Movement | Automatic |
|---|---|
| Calibre | — |
| Power reserve | 40 hours |
| Water resistance | 300 m |
| Crystal | Sapphire |
| Thickness | — |
| Date | — |
| Guarantee | Rotary 2 Years Guarantee |
A dash means neither Goldsmiths nor Rotary states it on the pages we read, so it's left blank rather than guessed.
Description
Delivery & returns
Other versions of the Rotary Seamatic 300
The same watch in 2 versions at Goldsmiths: here's what changes. Prices are Goldsmiths' own, checked daily.
| Reference | Dial | Price |
|---|---|---|
| RGB05430/78 This one | Green | £299 |
| RGB05430/04 | Black | £299 |