99 sets of storage( 2 people),IHB arrhythmia detection intelligent presurize,live voice (optional),Serial port (optional) Voltage power detection,Low power consumption Dimention:77.5mmÃ?68mmÃ?30mm (not include Wristbands) Display:Digital liquid crystal display Accuracy:±3mmHg(±0.4kPa) Fashionable outward,Light and compact,Easy to carry,suitable for health care(medical field,familes and adult) Auto power off:Auto power off when no operation for 1 minute Packing information Box volume:9.2cmX9.7cmX12.2cm, OuterBox volume:46.8cmX30.3cmX50cm weight:each one is about220grams, 60 per carton,per carton weight 13.5kg