Check the listing for details. Zacurate 500DL Pro Series Black Finger Pulse Oximeter Oxygen Saturation O2 Meter. Color: Black, Condition: New. Listed at 22.99 USD. Features:ACCURATE AND RELIABLE - Accurately determine your SpO2 (blood oxygen saturation levels), pulse rate and pulse strength in 10 seconds and display it conveniently on a large digital LED display.FULL SPO2 VALUE - The ONLY LED pulse oximeter that can read and display up to 100% for SpO2.SPORT/HEALTH ENTHUSIASTS - For sports enthusiasts like mountain climbers, skiers, bikers or anyone interested in measuring their SpO2 and pulse rate. SpO2 and Pulse Rate now faces instead of away from the user for an easy read.ACCOMODATES WIDE RANGE OF FINGER SIZES - Finger chamber with SMART Spring System. Works for ages 12 and above.LOADED WITH ACCESSORIES - Include 2X AAA BATTERIES that will allow the pulse oximeter to be used right out of the box, a SILICON COVER to protect your pulse oximeter from dirt and physical damage and a LANYARD for convenience. WARRANTY - Comes with 12 months WARRANTY and USA based technical phone support.Product Video: Zacurate Pro Series 500DL Pulse Oximeter Taking a reading of your pulse rate or blood oxygen levels is easy. Simply insert your finger into the finger chamber and turn on the device at the press of a button. The large LED display makes viewing the results a breeze. Its small size makes the device easy to carry. A lanyard is also included for convenience. Package includes 2x AAA batteries and a silicon cover to protect your pulse oximeter from dirt and damage. Standard Packing List 1X Pulse oximeter 2X AAA Batteries 1X Lanyard 1X Silicon Cover 1X User Manual (written in English) Technical Specifications Display LED SpO2 Measurement range: 70～100% Resolution: ±1% Accuracy: ±2% (70%～100%) Pulse rate Measurement range: 30～240 bpm Resolution: ±1% Accuracy: ±2bpm or ±2% (select larger) Blood Perfusion