Daiwa Ballistic EX Spinning Reel 4000 Magsealed construction Lightweight, corrosion-proof Zaion body and side cover 10 Bearing System (1CRBB + 8BB + 1RB) Air Rotor for lighter weight and greater sensitivity Digger digital gear design Magsealed construction Lightweight, corrosion-proof Zaion body and side cover 10 Bearing System (1CRBB + 8BB + 1RB) Air Rotor for lighter weight and greater sensitivity Digger digital gear design