Is the SBTR027 a good everyday watch?

Yes. It is a compact quartz chronograph with a clean gray dial that works with casual and business casual clothing. The quartz movement needs only a battery change every few years.

How does it compare with the Seiko Speedtimer?

The Speedtimer is a larger, sportier chronograph, often with solar movement and sapphire on some models. The SBTR027 is smaller, simpler and more dressy, with a standard quartz movement and Hardlex crystal.

What size is the case?

The stainless steel case measures about 39.8 mm in diameter, which is compact for a chronograph and fits most wrists.

Does it have a sapphire crystal?

No. It uses Seiko's Hardlex crystal, which is more scratch-resistant than mineral glass but less so than sapphire.

Is it a Japanese domestic model?

Yes. The Spirit SBTR027 was sold in Japan, so availability elsewhere is limited and documentation may be in Japanese.

It comes as a complete watch on its stock strap with the chronograph pushers and tachymeter bezel. Check the listing for any included papers or packaging.