Features: Fingertip pulse oximeter for simple daily checking, can be used in families, social care institutions, community service centers, etc. Intended for measuring blood oxygen saturation and pulse rate of adults or children, and you can use it for measurement before or after sports. The blood oxygen saturation meter mainly measures blood oxygen saturation (Sp02), but it can also measure pulse (PRbmp) and perfusion index (PI). Equipped with screen showing SpO2 value, pulse rate (PR), pulse wave, etc, very clear. Easy to use, open the probe, then insert one finger into the probe, turn on the oximeter, after about several seconds, the measurement result can be read directly from the screen. Powered by 2pcs AAA batteries(not included), compact size and lightweight, come with a lanyard, convenient to carry around and use anytime anywhere. With function switch: when no finger is inserted, it will automatically shut down after 8 seconds. Packing List: 1 * Oximeter (batteries not included) 1 * Lanyard 1 * User Manual (English) Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Color is random. Suggest a color from those offered, we will send if it is in stock. If not, we will send the one we have. 3. Actual brand and appearance may vary.