Nature Spirit Advanced Digital Blood Pressure, BP-1307: * Accurate measurements * Jumbo size back-lit LCD display * Easy to read day and night * WHO indicator to give user immediate blood pressure level comparison to the standards set by the WHO (World Health Organization) * Extra large cuff fits most people, 11.8-16.5" (30-42cm) * 2 groups of memory holds 60 measurements each with time stamp * USB port for optional USB cable and PC software for data download