1.ACCURATE AND RELIABLE- Monitor your SpO2 and pulse rate accurately. The accuracy of SpO2 is 2%. The accuracy of PR is 2bpm. The readings will be showed in 8 seconds and conveniently display them on the LED screen2.LIGHTWEIGHT AND PORTABLE- The pulse oximeter is very light and portable. It fits all finger sizes and crowds. The device automatically shuts off after 8 seconds when your finger remove to save energy, so you can measure oxygen saturation anytime and anywhere.3.EASY TO USE- The Finger Oximeter is designed with one-button control that allow you to measure your blood oxygen level in 8 seconds by simply placing your finger in the hole.4.HIGH QUALITY- Oximeter is small and lightweight (30g) with a portable lanyard and has a bright LED screeny for clear reading in dark places or bright sunlight.5.WARM TIPS- This device is not a medical device. It's for sports or aviation use only, not for medical use. Perfect for sports enthusiasts, climbers, skiers, cyclists, pilots, etc.