A voice gateway includes an input port that receives a voice signal from an unbundled analog line coupled to a Class 5 switch. The polyisobutylene has a molecular weight of at least 2. 05 to 10 wt-% alkyl titanate, 85 to 99 wt-% BDO, 50 to 50,000 ppm bifunctional carboxylic acid equivalents andor monofunctional hydroxycarboxylic acid equivalents and not more than 0. Consequently, the apparatus can improve the black-level display and thus can display a higher-contrast image as compared to the related art. Therefore a PDA may pan to different viewable image portions. A method of making the cardholder including a cardholder shaped magnetic lens is also disclosed.