Features: LED Display: LED display with high brightness, low power consumption, fast response, high definition, good flexibility, and high luminous efficiency. you can accurately and easily read the values of the oximeters even for children and the elderly. High-performance Sensor: Using high-performance sensors to shorten the measurement time to reach fast measurement. One-button Measurement: With simple and stylish design, small size, and rounded feel, this oximeter allows you to detect blood oxygen saturation anytime and anywhere. Automatic Shutdown: If there is no measurement response for 5-8s, the oximeter will automatically shut down, increasing the service life. Built-in Silicone Port: The soft silicone port makes it no pressure on fingers to keep smooth blood for more accurate measurement.After-sales Service Guarantee: Any problem, please contact our store without hesitation. Honor to serve you!