TATXSEI-CHR20-013 SEIKO+SUPER OYSTER SOLID 20MM SND253/255 WATCH BAND, BRACELET 20MM TOP QUALITY STAINLESS STEEL ON SEIKO 18MM DIVER’S DOUBLE FLIP LOCK CLASP. SOLID STAINLESS STEEL LINK & LUGEND HEAD. NEW DESIGN 8 SCREW-IN FIXING DETAIL, ADJUSTING THE LENGTH BECOMES MORE FLEXIBLE. OVERALL LENGTH 19CM. DESIGN TO FIT SEIKO FLIGHT CHRONOGRAPH TACHYMETER WATCH SND253 , SND255 FREE ONE PAIR of Spring Bar. Net weight : 82g