Seiko SBTM017

The Seiko reference SBTM017 is a GMT watch with a 38.5 mm steel case. The case is 9.5 mm thick, with a lug-to-lug measurement of 43.2 mm and a water-resistance rating of 100 metres. Solar-powered calibre 7B22 contains 6 jewels and operates for approximately 6 months when fully charged. The watch has a sapphire crystal; the dial has a date display. A three-fold clasp with push-button release fastens the watch. The hands and indices carry LumiBrite. Movement accuracy is plus or minus 15 seconds per month without signal reception. A screw-down crown is part of the case.