Feature: Specification: Finger pulse oximeter is an economical and accurate method to detect pulse rate and blood oxygen saturation by finger. Small size, easy to carry. Suitable for daily use, measuring your health at any time. Features: Multi-function: Digital pulse oximeter can be used to measure pulse rate, blood oxygen saturation levels accurately. Easy to Read: Support SPO2, pulse, and bar chart, you can view your result very clear with LED display. Easy to Use: Accurate and reliable, one-button operation, just clip it on to your finger and turn it on at the press of a button. Automatic power off after 5s when not in use. Widely Applicable: Suitable for everyday use. Widely used in family, oxygen bar, physical care in sports, etc. Compact Size: The oximeter is lightweight and portable. Specifications: Color: blue，green for optional Material: Plastic Measurement accuracy: ± 2bpm or ± 2% SPO2 measurement range: 35 ~ 100% (resolution is 1%) Pulse measurement range: 30 ~ 250BPM (resolution is 1BPM) Automatic shutdown: when no finger is inserted, it will automatically shut down within 5 seconds Battery: 2*AAA Batteries (Not Included) Package size: 70 * 65 * 40mm/3.3 * 2.6 * 1.6inches Package Weight: 50g/1.3ounces Packing List: 1 x Oximeter 1 x User's Manual Package List: 1 x Oximeter 1 x User's Manual