Nonin vantage pulse oximeter uses puresat spO2 technology an intelligent pulse by pulse filtering to provide accuracy in situations that are challenging due to dark skin tones, low perfusion and more. Automatically adjusts to each patient from pediatric to adult quickly and accurately and accommodates fingers, thumbs and toes with digit thicknesses 8-25.4 mm. The auto-on/off mechanism allows two aaa batteries to provide up to 6,000 spot checks before being replaced. It is lightweight and weighs less than two ounces. Available in blue colour.