Check the listing for details. Zacurate 500C Fingertip Pulse Oximeter SpO2 Blood Oxygen Level Monitor O2 Meter. Color: Black, Condition: New. Listed at 36.99 USD. Features:NEWEST IN THE MARKET - Newly launched and advanced pulse oximeter with major software and hardware improvements. *Device is CE and FDA Approved*DELUXE MODEL - Zacurate® 500C Elite Pulse Oximeter is the deluxe version of the Amazon top rated Zacurate® 500DL Pro Series Pulse Oximeter.PLETHYSMOGRAPH AND PERFUSION INDEX - Measure your SpO2 (Blood Oxygen Saturation Level) values and pulse rate accurately and reliably. Plethysmograph shows pulse strength and blood flow.NEW SOFTWARE FEATURES:Auditory Alarm System to warn you when your SpO2 and Pulse Rate are beyond set limits. Auditory Beeps for every detected pulse. Adjustable screen brightness.SPORTS AND HEALTH ENTHUSIASTS - Suitable for sports enthusiasts like mountain climbers, skiers, bikers or anyone interested in measuring their SpO2 and pulse rate.FULLY-LOADED WITH ACCESSORIES - Includes 2X AAA BATTERIES that will last you hundreds of readings, a SILICON COVER to protect your pulse oximeter from dirt and damage and a LANYARD for convenience. 12 MONTHS MANUFACTURER WARRANTY - Upon purchase, receive 12 months of manufacturer warranty. The warranty is void if the item is not purchased through an approved vendor like Beyondmedshop (Our Ebay Store), Med Shop and Beyond, or Zacurate® - Manufacturer of Medical Products. What is a Plethysmograph?Plethysmograph is software added onto our deluxe pulse oximeter to detect and measure pulse strength and blood flow. Each wave corresponds to a heartbeat and the amplitude to the amount of blood detected in your blood vessels. For best results, the height of the wave amplitude should be consistent throughout as shown in the figure above. If not, you should retake your measurement and make sure that your finger is positioned right under the LED lights and sensor.Additional Hardware Improvements Made to the Zacurate 500C1) Added a Perfusion Index functionality. The Perfusion Index conveniently informs you of the strength of your pulse. If the value is less than 0.2%, this means that your hands are either too cold or improperly positioned in the oximeter.2) Built using high density ABS plastic to block ambient light from reaching the sensor, increasing the signal to background ratio and the accuracy of the measurement dramatically.3) Uses soft, hypoallergenic medical grade silicon in the finger chamber to ensure comfort for your finger.4) Uses a self-adjusting spring system to fit your finger snugly into the chamber without impeding blood flow.Even with all the new added features, the Deluxe 500C Pulse Oximeter remains light and portable, allowing convenient measurement on the go!Standard Packing List 1X Deluxe Pulse Oximeter 2X AAA Batteries 1X Lanyard 1X Silicon Cover 1X User Manual (written in REAL English) Technical Specifications DisplayLEDSpO2Measurement range: 70～100% Resolution: ±1% Accuracy: ±2% (70%～100%)Pulse rateMeasurement range: 30～240 bpm Resolution: ±1% Accuracy: ±2bpm or ±2% (select larger) Blood Perfusion