Advanced Features Through Smart App Integration - The Zacurate 500B-B Bluetooth Pulse Oximeter is the latest innovation in the Zacurate line, combining multiple advanced features in one compact device. Pair it with the free Beyond Oximeter App ( IOS and Android compatible) for effortless real-time monitoring and recording of SpO2, pulse rate, and pulse strength. It supports multiple users and long-term data storage. Accurate & Reliable: Features an upgraded OLED display and enhanced sensor for precise SpO₂ and pulse rate readings — even at low blood perfusion levels. Plethysmograph & Perfusion Index Indicators: Verify the accuracy of your readings with built-in visual indicators, helping eliminate doubts about measurement reliability Perfect for Sports, Aviation, or Home Use: Ideal for climbers, skiers, bikers, aviators, and anyone who wants to monitor SpO₂ and pulse rate on the go. Use before or after exercise — remain still while measuring. Not intended for continuous overnight monitoring or recording. Easy to Use – Simply insert your finger fully into the chamber, press the power button, and keep your hand still. Movement can affect accuracy. Wait a few seconds for the device to stabilize and display your results. Fits a wide Range of Finger Sizes - Finger chamber with SMART Spring System accommodates users age 12 and above. Complete Accessory Set: Includes 2× AAA batteries (ready to use right out of the box), and a lanyard for easy carrying. Backed by a 12-month warranty and USA-based technical support. Indications This pulse oximeter is sold for sports and aviation use only and calibrated to work at sea level. This is not a medical device. Ingredients ABS Plastic Directions Taking a reading is easy, just clip it on to your finger and turn it on at the press of a button. The large LED display makes viewing the results a snap. This device is not intended to diagnose or treat any medical condition or disease. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. This device is for sports and aviation only. Legal Disclaimer Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.