This SEIKO Black Boy, model 7548-7000, was likely manufactured around August 1979. The bezel rotation is a bit stiff due to its age, but it is a rare working item. The case is silver/black, and the belt is black.
This Luminox black quartz watch features a water-resistant rubber band. I will respond to your inquiry within 24 hours. Moreover, I commit to promptly correcting any misinformation and maintaining transparency.