The Thermobio fingertip pulse oximeter JP-500D with a clear OLED display is one of the few on the market that can display SpO2 value up to 100%. It uses high quality light absorbing material, preventing interference from the environment, resulting in higher accuracy and reliability under most conditions.The JP-500D can accurately determine your SpO2 (Blood Oxygen Saturation Levels), Pulse Rate and Pulse Strength quickly and reliably. Note: This device is intended for sports or aviation use and is not intended for medical use Package includes: * 1x Fingertip Pulse Oximeter JPD-500D * 1x Hanging Rope * 2x AAA Batteries * 1x Storage Bag * 1x Quick Start Guide * 1x User Manual Technical specifications: * Dimensions: 2.5 x 1.5 x 1.3 in (W x D x H) * Weight: 1.5 oz (including 2x AAA batteries) * Waterproof rating: IP22 * Peak wavelength range of emitted light: 660 nm ±3; 905nm ±5 * Max optical output power: 1.2 mW (905 nm) * Working conditions: 41 - 104 °F (5 - 40 °C) * Oxygen saturation alert conditions: 94 - 100% * Oxygen saturation display range: 35 - 100% * Oxygen saturation resolution: 1% * Oxygen saturation precision: ±2% (within 70 - 100%) * Pulse rate alert conditions: 50 - 130 bpm * Pulse rate display range: 25 - 250 bpm * Pulse rate resolution: 1 bpm * Pulse rate precision: ±2 bpm * PI: min 0.2% (weak PI)

Easy Operation: A single button is all that is needed to fully operate the oximeter, allowing for measurement of SpO2, pulse rate and perfusion index. Automatic Shut-Off: The device will automatically turn off after 5 seconds upon removal of the finger. Sanitary and Safe: Designed to conform with the highest safety standards for pulse oximeters, medical grade silicone is used for a gentler contact on the finger. Intelligent Alarm System: If an irregular value for either pulse rate or SpO2 is detected, a sound alarm indicator will notify you of such. Clinical Grade Accuracy: Our oxygen blood monitor uses an optical transmittance method to non-invasively and accurately measure your SpO2 (blood oxygen saturation) levels in 10 seconds with results displayed clearly on a large color OLED display.