Features:<br />Multi-functional measurement: this oximeter can measure your real-time blood oxygen saturation, respiratory rate, heart rate,<br />perfusion index and electrocardiogram at the same time accurately and show them on the two-color oled display.<Br />bt connection, app control: before using it, you need to scan the qr code to download our app(no extra cost). After connecting the bt, you can use the app to see your real-time data.<Br />easy to use: just press the button to turn on the oximeter and put your finger in the oximeter, then open the app and connect your bt<br />to spo2_ble,then you can see your data on the display.<Br />warning for abnormal data: if you have any abnormal data when detecting, the data will turn red to catch your eyes.<Br />wide application: suitable for home, sports and travel. Particularly fits for persons with heart failure, chronic obstructive pulmonary diseases, bronchial asthma,etc.<Br />you can see your history data in the history page, which can keep the data for a half year.<Br />low battery indicator. Automactiall power off when not used.<Br />app&#39;s language can be changed according to your moblie phone language system. <Br/>specifications:<br />color: black<br />material: abs<br />battery: 2 * 1.5V aaa batteries(not included)<br />package size: 7.5 * 5 * 3.5Cm<br />package weight: 61.8G<br/>package list:<br />1 * finger pulse oximeter<br />1 * lanyard<br/>instructions:<br />1.Scan the qr code to download the app.<Br />2.Press the button to turn on the oximeter.<Br />3.Put your finger in the oximeter.<Br />4.Open the app and connect your bt to spo2_ble.<Br />5.You can see your data on the display.<Br/>notes:<br />1.Explosive hazard: do not use the oximeter in environment with inflammable gas such as some ignitable anesthetic agents or other materials may occur.<Br />2.Do not use the oximeter while the testee is under mri or ct scanning.<Br/>