Feature: 1. Accurate determination of your oxygen saturation, rapid oxygen saturation reading, pulse measurement, and convenient display. 2. OLED display screen which is energy saving and you can see it in the night. 3. Sound and light double alarm, can set the alarm upper and lower limits. 4. Simple and convenient to use, just clip the oximeter on your finger. 5. Compact and light weight, easy to carry, suitable for various finger sizes. 6. Widely used in daily life, such as hospital, home health care, etc. Specification: Condition: 100% Brand New Item Type: Fingertip Pulse Oximeter Display: 1.1in OLED display Monitoring Parameters: Blood oxygen saturation (Sp02), pulse rate (PR), blood perfusion index (PI) Waveform Display: Blood oxygen volume waveform, pulse bar chart Pulse Measurement Accuracy: ± 2% Blood Oxygen Saturation Measurement Accuracy: ±2% (75-100%) Screen Switching: Support gravity induction four-way switching display Alarm: Sound and light, can be defined alarm upper and lower limits Data Transmission: Can connect phone (for android devices) and some PC devices through bluetooth Suitable: 1 Year Old+ Size: Approx. 33x30x60mm/1.3x1.2x2.4in Power Supply: DC 3V (2 x AAA Battery, Not Included) Weight: Approx. 60g/ 2.1oz Package List: 1 x Fingertip Pulse Oximeter1 x Strap 1 x Storage Bag1 x Chinese Manual