Meditech provides you the best medical devices in China Oximeter (Fos3 Plus)SPO2 & PR & PI -4 different display mood -Alarm -power off after 4 sec -USB -Software comes with USB Cable ,USB Charger, Nylon Case ,Cleaning Cloth if you needs any details call us on this Num: (+86)18866248910 - (+86) 532 85832673