This Finger Pulse Oximeter was specifically designed according to the pilot’s requirements. As every person’s body is different, it is therefore important that during flights above 8.000 ft the pilot’s blood oxygen saturation level is measured, in order to avoid any impairment through oxygen deficiency. Furthermore, you can read your pulse at any time. The PILOT FPO is solely to be used for information and monitoring purposes and is no substitution for compulsory oxygen supply needed by law when flying at high altitude. Further advantages are: Easy to use automatic on/off function, insert finger and read Bright and easy to read OLED colour display Low power consumption – up to 30h with 2 AAA Batteries Low voltage warning Low weight ca. 50g incl. Batteries Automatic power off after 8sec. if not in use Adjustable brightness and 6 display modes Also included: 2 AAA Batteries Protecting cover Lanyard Manual in English