Developed for professional use in a clinical setting. One-button operation allows quick, easy blood pressure and pulse measurements. Can automatically take up to three readings, providing the average for more accuracy. Quiet automatic inflation system senses the optimal inflation level for greater comfort. Requires 4 AA batteries or included AC adapter. Includes small cuff for 7"-9" (18-23cm) arm, adult cuff for 9"-13" (23-33cm) arm, large adult cuff for 13"-17" (33-43cm), and extra large adult cuff 17"-24" (43-61cm) arm circumferences. Latex free.