Wellue Pulse Oximeter Fingertip Blood Oxygen Saturation Pulse Rate Monitor with Batteries and Lanyard Bluetooth FS20F White

ACCURATE AND RELIABLE – Appropriately measures your blood 02 level, pulse rate, pulse strength and pulse waveform and display them conveniently on a big OLED screen.
WARNINGS FOR UNUSUAL READINGS – The value on screen will flash when extraordinary 02 level or pulse rate is observed. Regulate your 02 level and PR.
FREE APP FOR ANDROID AND iOS – Use App at no additional cost. Record and store a reading as much as 10 hours steadily. (ONLY record when APP is running) View real time data, graphic report and trends of blood 02 level and pulse rate.
EASY TO USE – Take a reading in a very simple-to-use way, simply clip it on in your finger and turn it on on the press of a button. Finger probe with SMART Spring System accomodates wide selection of finger sizes.
COME WITH ACCESSORIES – Include 2 X AAA BATTERIES and a LANYARD for convenience. NOTE: This device is for Sports and Aviation use only and not intended for medical use.