TATXSEI-CHR21-014 SEIKO+SUPER OYSTER SOLID 21MM SNA411/413 WATCH BAND, BRACELET 21MM TOP QUALITY L316 STAINLESS STEEL ON SEIKO 18MM DIVER’S DOUBLE FLIP LOCK CLASP. SOLID L316 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 SNA411 , SNA413 FREE ONE PAIR of Spring Bar. Net weight : 87g