Check the listing for details. ClinicalGuard CMS-500S Deluxe Fingertip Pulse Oximeter & Heart Rate Monitor. Color: Black, Condition: New. Listed at 31.95 USD. About the CMS 500S The CMS 500S Deluxe Fingertip Pulse Oximeter from ClinicalGuard is a premium pulse oximeter designed for sporting and aviation enthusiasts who require accurate and durable performance - fast. The 500S Pulse Oximeter is the perfect choice for on-the-go readings that fit with your lifestyle, with a simple no-button operation that allows it to intelligently sense when a finger is inserted. The crystal clear OLED screen can rotate and display at 6 angles, and its small form factor coupled with both a silicon and soft carrying case in addition to a lanyard makes it a great travel companion that can be taken anywhere. A quick snap-off cover allows for quick battery removal and takes any pesky screws out of the equation. A low battery indicator alerts the user when it is time to replace the batteries. (Uses 2 AAA alkaline batteries) An adjustable spring hinge allows the pulse oximeter to adjust to any adult sized finger. This hinge also helps prevent interference from ambient light. Bright OLED Display The crystal clear OLED display allows use in low light and auto-rotates to a readable position. This bright display is viewable in any environment - from dark surroundings to bright sunlight. Easy Battery Removal The quick snap-off cover allows for an easy removal batteries and takes screws out of the equation. (Uses 2 AAA Alkaline Batteries) You will see a 'Low Battery' indicator to signal you to replace your batteries. Automatic Power Off The pulse oximeter will automatically shut off after 5 seconds without use. Great for saving your battery life. We work hard for our reputation. This item has a no-fuss 30 day return period as well as a one year warranty on the item.