• Blue LED display for excellent visibility. Easy to see in dark places. It has an auto power off function that automatically turns off when you remove your finger, so you can prevent forgetting to turn it off • Screen protector is affixed to the LCD screen. Please peel off the film before use. In addition, the film may have scratches, but it does not affect the quality of the product • Just pinch your finger to see the blood oxygen saturated concentration, pulse rate, pulse strength, and waveform clearly and clearly displayed on one screen, so you can see what you need • Recommended for those who normally want to manage their health in their home, those with respiratory diseases, heart or basic diseases, and outdoor activities such as mountain climbing. It can also be used for a wide range of uses, such as nursing at home, nursing the elderly, maintaining physical condition before exercising, and preventing alpine disease during mountain climbing • At only 2.8 oz (80 g), it is super lightweight, and has an easy grip shape, making it easy to use by women and seniors. Comes with a dedicated case and strap, so you can easily store it in your bag or box when you go out, making it convenient to carry. In addition, the luxurious design and practicality, the Pulse Oximeter is a perfect gift for your lovers, parents and friends on Respect for the Aged Day, Mother's Day, Father's Day and Christmas. Package Includes: 2 x AAA alkaline batteries, 1 x dedicated case, 1 x strap, 1 x rubber cover, 2 x Japanese instruction manual (English language not guaranteed)