Here we have a beautiful and interesting special design, automatic fly back chronograph wristwatch, “Bullhead” called model of Seiko. The wristwatch manufactured by: Seiko Watch Co. Japan, October 1977. The Model is: Seiko Chronograph Automatic also known as "Bullhead" and "Challenge Timer". The movement is; in-house with 21 jewels calibre 6138B with hand winding capability. It is a vertical clutch chronograph (beating at 21.600 bph) with column wheel and fly back function. Black date & day wheels, brown tachymeter ring, case code is 0040. Case Material: Stainless Steel Case and Bracelet. Case width (right to left) is: 42 mm, length is 45 mm excluding crown and Case depth is 14 mm. The closed bracelet is about 17 cm. The watch is a used one and in average condition, as shown in photos. There are minimal scratches on the crystal, bezel, sides, bracelet and back of the watch. The watch is not polished to keep its originality, please inform us if you want it to be polished before the postage. The bracelet and the bezel is Seiko but not authentic. The watch is fully examined. Mechanism is working properly. All photos you see above are original and the actual. The postage include no extras. DHL Express worldwide and secure shipping with tracking code. The buyer is responsible for procedures concerning the custom duties, import duties or any extra costs. (if needed)