Delivers fast, reliable oximetry in an extremely handy, pocket size solution by combining the monitor and sensor into one unt. While it's small in size Digit is big on performance, providing fast, reliable SpO2, pulse rate and pulse strength measurements for patients from pediatric to adult. This affordable, non-invasive device offers the convenience clinicians appreciate in EMS, hospital or clinical environments as well as home use. Features: SpO2: Range: 0 to 99% functional SpO2 (1% increments), Accuracy: +/- 2% at 70 to 99% less than 70% unspecified, Averaging: 8 seconds average. Pulse Rate: Range: 30 to 254bpm (1 bpm increments), Accuracy: +/- 2% or 2 bpm (whichever is greater). Power requirements: 2 AAA cell Akaline Batteries. Battery Life: 16 hours continuous use, 1400 spot checks, 1 min. on, 2 min. off. Two Year Warranty