Diver 300M 210.30.42.20.01.001: black dial, red script
If you picture a Diver 300M, this is probably the one: a black dial with engraved waves, white luminous dots and bars, sword-shaped hands and a single line of red text for the Seamaster name. The black bezel has white numerals and a luminous pip at 12, and the date window sits at 6. The case is 42 mm, with the valve crown at 10 o’clock.
The numbers
| Reference | 210.30.42.20.01.001 |
| Case | 42 mm, silver tone |
| Dial | Black, waves, red script |
| Bezel | Black |
| Strap or bracelet | Link bracelet, folding clasp |
| Date | At 6 |
| Crystal | Sapphire |
| Movement | Automatic |
| Water use | Swimming, showers, sauna and diving, crown screwed down |
Gallery
We photographed it in hand: from the front with a blue reflection on the crystal, from the left, from the crown side, the clear caseback with the clasp open behind it, and next to a black rubber strap still in its bag.
Movement and accuracy
Our movement guide puts our automatics at about +4 to +8 seconds a day. That is a general figure; a timegrapher reading for your watch can be sent with the QC photos.
Water, size, delivery
It can go swimming, diving and into a hot shower with the crown screwed down. On the bracelet it weighs about 178 g and suits wrists of 16.5-19 cm. You approve photos and a video of your unit before it ships free and tracked. For a white dial in the same case, see the Diver 300M 210.30.42.20.04.001, and for a brushed grey bezel the Seamaster grey bezel Diver; the Diver 300M guide compares every colour, and the full Seamaster replica collection is one click away.
Questions about the black Diver 300M
Does it come with the rubber strap from the photos?
The listing is for the bracelet version. The rubber strap appears in some photos only.
Which way does the bezel turn?
It is a diver’s timing bezel, and your QC video can show it turning before the watch ships.


















