Here’s a new Samurai reference for you. USA ref. SRPE03K1 has a hobnail (waffle-style) black dial and black bezel with (grey?) 15min-scale.

It has a 44mm Stainless steel case with a Sapphire crystal with anti-reflective coating on its inner surface and a date magnifier. The case looks like it has a DiaShield coating.

The case measures 45m in diameter with a thickness 13.2mm and a lug-to-lug measurement of 47.7mm. Water-resistance is 200m.

Power comes from a Seiko 4R36 automatic caliber with 24 jewels and 41hrs of power-reserve. Seiko Lumibrite is on all hands and indexes incl. red-tipped arrow seconds hands.