One of the rare case from SEIKO 6139 chronograph models: SEIKO "Hexagon" (6139-7080) Chronograph Men's Automatic Watch from the 1970s. Perfect opportunity for SEIKO collectors and lovers.  Movement: Cal. 6139B Japan - 17 Jewels  Operating Instruction: Upper button starts and stops sweep second for chronograph and lower button reset it. Pushing crown sets sate quickly and pushing crown deeper sets day & date together quickly.  Notable Features: All Steel - Automatic Chronograph - Quickset Day & Date - Chronograph - Unusual Hexagon Case - Rare Model  Case Size: 40mm (without crown) x 42mm (lug-to-lug)  Band-Size: Fits up to approx. 20cm (wrist size), Lug: 10mm/23mm  Condition: Case and bracelet band have minor and major visible signs of wear. Dial has tiny marks, spots and wear. Case back is belonged to a another Seiko chronograph model. Repainted big second hand. Photos are part of the description, please look at them carefully. →No box & paper. The watch will be shipped via Express Courier to worldwide with a tracking code. Delivery time is only a few days* for Europe and approx. 5-7 days* for other countries. Please, be aware of customs duty. Customs duties are the buyer's responsibility and beyond the control of sellers. *Estimated business days