IBM 5251

With a polymeric PDA stylus tip on one end and a smooth gel ink rolling ball pen on the other, the Rolling Ball Pen/Stylus Accessory inserts into the body of the Cross Matrix, with either side facing out, to complement the Matrix's integrated dual ball-point pen. The Rolling Ball Pen/Stylus Accessory also accepts a specially designed document marker (highlighter) refill for even greater versatility.