We offer pulse oximeters, which are simple and convenient in usage. These are small in volume, light in weight (total weight is about SOg including batteries) and convenient in carrying. Moreover, the power consumption is low and the two originally-equipped two AAA batteries can be operated continuously for 30 hours.We offer finger tip pulse oximeter with Alarm and Beep, which is used to measure human Hemoglobin Saturation and heart beat through finger. The product is suitable for use in family, hospital (including clinical use in internist / surgery, Anesthesia, paediatrics, intensive care and etc) Oxygen Bar, Social medical organization, physical care in sports.