The C21 Oximeter Features:

* Dual color HIGH RESOLUTION easy to read OLED display * Display SpO2, Pulse Rate ,Pulse bar and Plethysmogram * 6 display modes for easy reading from all sides. * Low power consumption, automatic power off. Approximately 30 Hour normal operation. * Battery-low indicator * 2 AAA alkaline or rechargeable batteries * 10 setting adjustable brightness * Accommodates widest range of finger sizes from pediatric to adult * Small & lightweight design ( total 0.06 lbs without batteries ) * 2 year limited warranty