Brand: Seiko
Model: Sharp Edged GMT
Reference Numbers: SPB217 (aitetsu, or indigo iron), SPB219 (tokiwa, the color of evergreens), SPB221 (sumi-iro,  Japanese black ink), SPB225 (hihada-iro, a reddish-brown color first derived from Japanese cypress), and SPB223 (blue and white limited edition).

Diameter: 42.2mm
Thickness: 13.7mm
Case Material: Stainless steel
Dial Color: blue, green, red, brown, or white
Indexes: Applied
Lume: Yes, LumiBrite
Water Resistance: 100 meters
Strap/Bracelet: Stainless steel