Finger oximeter is an economical and to detect rate and blood oxygen saturation by finger. Small size, easy to carry. Suitable for daily , measuring your health at any time.Resources: Multi-function: Digital oximeter can be used to accurately measure rate and blood oxygen saturation levels.Easy to Read: Supports SPO2, and bar graph, you can see the result very clearly with the LED screen.Easy to : Precise and reliable one-button operation, just clip it to your finger and turn it on at the press of a button. Auto off after 5s when not in .Widely Applicable: Suitable for daily . Widely used in family, oxygen bar, sports care, etc. Compact Size: The oximeter is lightweight and portable.Blood oxygen measurement accuracy: 70 ~ 100%, +/- 2%, less than 70% undefinedBlood oxygen measurement range: 0 ~ 100% (resolution is 1%) measurement range: 30~250BPM (resolution is 1BPM)Auto off: when no finger is inserted, it will automatically off in 5 secondsBattery: 2 AAA batteries (without battery)Colour: blue whiteMaterial: plasticSize: 85mmx65mmx40mmPackage Contents:1 * Oximeter1 * Lanyard1 * Chinese and English manualsOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.