The Mazda × Seiko chronograph gets the instrument-dial idea right
Seiko Mazda Chronograph BF9504: 81/120 bezel clicks, Holden's October 30 rating update, sourced specs and official photos.

The Mazda × Seiko chronograph is pretty cool, and this is branding that works for me. It feels classy. The instrument-inspired dial, restrained gray color and small red accents make sense together, and the Mazda identity fits that design. My dislike of cartoon watches and loud logos doesn't mean every collaboration bothers me.
I really like the numerals. Mazda uses its own Mazda Type lettering, and the narrow shapes make sense against the chronograph scales. The red seconds-hand detail and crown accent give me enough color without making the whole thing look like a piece of racing merchandise. These are reactions to Mazda's official photographs; I haven't handled the watch or checked its legibility while wearing it.
A size that makes sense to me
The official dimensions are 39.2 mm wide, 47.2 mm long and 11.4 mm thick. That sounds like a very approachable set of proportions, especially for a chronograph. Thickness is usually where I get picky, and 11.4 mm gives me a lot less to worry about than some mechanical chronographs would.
The watch uses battery-powered quartz. Mazda lists accuracy of ±15 seconds per month and an approximate three-year battery life, while warning that the supplied test battery can run out sooner. I haven't verified the exact Seiko calibre, so I am not going to guess one from the dial layout. Quartz makes plenty of sense to me here if it helps keep the watch compact and straightforward to live with.
The crystal is curved Hardlex, and water resistance is 100 meters. I would prefer sapphire if the pricing supported it, although I do like the curved profile shown in the side photograph. The hours and minutes hands have LumiBrite according to the specification; that doesn't mean every scale or numeral will glow.
Two bands in the same box
Mazda supplies both the steel bracelet and a black calf-leather band with brown-finished edges. These are included with one BF9504 watch, not two separate models. The 20 mm lug width should also make other strap choices straightforward, although the fit of any specific replacement still needs checking.
The Japanese listing uses product code BF9504 and part number MDEW W9DC1. The original announcement date remains uncertain, and the reported online and dealer opening dates don't establish a new launch day by themselves. I also haven't verified a US retail price or an American order route, so the dollar-price field stays unknown.
I give it 81 out of 120 bezel clicks. The instrument lettering and the way Mazda has used its branding appeal to me. Before thinking about an import, I would still want a clear price, shipping and warranty answer, plus a closer look at the bracelet clasp. The photographs alone can't tell me how that bracelet feels.

Image: Mazda / Seiko official collaboration photograph, via Mazda Collection 
Image: Mazda / Seiko official collaboration photograph, via Mazda Collection 
Image: Mazda / Seiko official collaboration photograph, via Mazda Collection
Key specs
| Brand | Seiko |
|---|---|
| Model | Mazda Chronograph BF9504 |
| Reference | BF9504 / MDEW W9DC1 |
| Price | Unknown |
| Availability | Japanese Mazda Collection listing and dealer ordering; US availability unverified. |
| Case | 39.2 mm wide × 47.2 mm long × 11.4 mm thick |
| Material | Stainless steel |
| Movement | Battery-powered quartz; exact calibre unconfirmed |
| Accuracy | ±15 seconds per month, manufacturer statement |
| Crystal | Curved Hardlex |
| Water resistance | 100 m |
| Lug width | 20 mm |
| Included bands | Steel bracelet and black calf leather |
| Origin | Japan |
Source-based first look using official photography; no hands-on testing of this release is claimed.
Sources
- Seiko Mazda Chronograph BF9504 official product / collaboration page mazdacollection.jp
- Seiko Mazda Chronograph BF9504 source 2 notebookcheck.net