Accurate and reliable: It uses the acceleration sensor, the measurement results will be read directly within 6 seconds, approved by FDA and CE, designed to strict standardsWide range of users: CocoBear Pulse Oximeter is suitable for sports enthusiasts/work over 12 hours/drink alcohol/vascular disease / respiratory system disease and anyone who wants to measure blood oxygen from children to old peopleUpgraded Technology: The update period only needs 1st if you stop measuring, you will automatically enter sleep mode within 8. Simple button operation, convenient and fast, saving time and energy.