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CONTEC CMS50D Pulse Oximeter Fingertip Blood Oxygen Monitor-Dark Blue English Packaging - Newegg.com
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Contec Cms50d Oled Display Digital Fingertip Pulse Oximeter Portable Spo2 Sensor Heart Rate Blood Oxygen For Adults 1/5/10pcs - Oximetry - AliExpress
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AccuMed CMS-50D Finger Pulse Oximeter Blood Oxygen Sensor SpO2 for Sports and Aviation. Portable and Lightweight with LED Display, 2 AAA Batteries, Lanyard and Travel Case (Black) - Walmart.com
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Amazon.com: CMS50D-BT Upgraded Version of CMS50D Plus - 24-Hour Memory, Data Can Be Stored & Uploaded to Computers with USB Cable, for Home & Sports Use, with Lanyard, Blue : Electronics
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