This is a Bulova Chronograph "F", a Heuer cal. 12 movement (Bulova cal. 14EFAD) packed into a huge seventies style case, 45 mm wide.
Note the tachymeter scale reaching the slower speed of 50 compared to usually 60.
I love the colourful face, the combination of the metallic blue color with the various shades from beige to orange.
Enjoy,
Mick
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