Feature: 1. Multi-function: Digital pulse oximeter can be used to measure pulse rate, blood oxygen saturation levels accurately. 2. Easy to Read: Support SPO2, pulse, and bar chart, you can view your result very clear with LED display. 3. 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 8s when not in use. 4. Widely Applicable: Suitable for everyday use. Widely used in family, oxygen bar, physical care in sports, etc. 5. Compact Size: The oximeter is lightweight and portable. 6. Audible alarm function: It supports the audible alarm function, which detailed in the English user manual. 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 TFT 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. Audible alarm function: It supports the audible alarm function, which detailed in the English user manual. Specifications: Model: SO 911 Color: white Material: Plastic Blood oxygen measurement accuracy: 70 ~ 100%, ± 2%-± 3%, less than 70% undefined Blood oxygen measurement range: 70 ~ 100% (resolution is 1%) Pulse measurement range: 30 ~ 250BPM (resolution is 1BPM) Pulse rate accuracy: ±2bpm or ±2% to the maximium Data update circle: 0.25s-2s SpO2 PR average: 8s Pulse beep: support Peak Wavelength range: 500 nm-100 nm Automatic shutdown: when no finger is inserted, it will automatically shut down within 5 seconds Battery: 2*AAA Batteries (Not Included) Size: 57.8*31.3*35.9mm Package size: 85 * 65 * 40mm/3.3 * 2.6 * 1.6inches Package Weight: 60g Packing List: 1 x Oximeter 1 x User's Manual Package List: 1 x Oximeter 1 x User's Manual