Fingertip Pulse Oximeter Blood Oxygen Saturation Monitor with OLED Screen Included Lanyard

["High Accuracy & Reliable - Accurately measures your SpO2 (blood oxygen saturation), pulse rate, and pulse strength in less than 10 seconds, clearly and conveniently displayed on the large digital LED display.","Easy to Use - This fingertip pulse oximeter features a one-button design, making measurements easy and convenient. Simply insert a finger fully into the fingertip photoelectric sensor and press the power button to take a measurement. Keep your hand still, or movement will affect accuracy. Please wait a few seconds for the device to stabilize and display the result.","Sports Enthusiasts & Health Monitor - Ideal for cyclists, climbers, skiers, fitness enthusiasts, and anyone who needs to monitor their blood oxygen saturation (SpO2) and pulse rate. Can be used before or after exercise.","Portable - This blood oxygen monitor is lightweight and easy to carry. With a detachable lanyard, allowing you to measure blood oxygen saturation anytime, anywhere. The finger cavity uses an intelligent spring system to adapt to various finger sizes.","Satisfied Service - We provide 24-hour online support and 3-year warranty on this fingertip pulse oximeter, if any questions, pls feel free to contact us."]