The Microline 5521 has been designed for use in the harshest of operating environments whilst offering the highest levels of flexibility and performance with unparalleled reliability.¤¤PRODUCT FEATURES:¤¤136 column dot-matrix printer;¤¤High durability 9 pin print head;¤¤Up to 570 characters per second print speed;¤¤Multi-part paper handling (original + 5 copies).