SPO Digital Finger Pulse Oximeter #5500

The SPO Model 5500 is a very small, lightweight, pulse oximeter — a device that measures blood oxygen saturation (%SpO2) and pulse rate.
FEATURES

* Easy to use
* "All-in-one" integrated finger device.
* Very low power power consumption. Approximately 1000 hours of use.
* Single Button Operation
* 3.6V Lithium battery
SPECIFICATIONS

Saturation: 40 to 99%
Heart Pulse Rate: 40 to 250 bpm
Resolution: 1 digit
Warranty: Two years.