National Watch Lycke 21 jewel wristwatch Material: steel Automatic movement ETA 2431 Case diameter: 36.2 mm including the crown Distance between the lugs: 18 mm Thickness: 10.6 mm Strap length: 20 cm excluding the buckle, 21 cm including the buckle. Period: 1970-80 This National Watch Lycke wristwatch is in steel. It is worn on the case relative to its age. It works very well and keeps accurate time. An adjustment has been made. The wristwatch has been cleaned. The Plexiglass is new. The movement is in excellent condition and spins perfectly. The dial was worn over time. It has had the strap replaced with a black, synthetic leather strap with a chrome-coloured buckle. Registered and secure shipping by post, with tracking and signature upon receipt. Shipping costs to be paid by the buyer. If you are satisfied after the purchase, please do not hesitate to leave a positive review on my profile! Thank you!