TISSOT Navigator Seastar gents wristwatch with chronograph in steel, Switzerland around 1970, manual winding, screwed down case with gray tachymeter scale, neutral stainless steel bracelet, gray dial, luminous indexes & hands, date at 6, rhodium plated movement calibre Valjoux 7734, 17 jewels, diameter approx. 40 mm, length approx. 20 cm, condition 2-3