Features: -A natural, tech-savvy, and caring solution, the basal thermometer helps track ovulation cycles or plan a pregnancy without hormones -Ultra-precise (to within 0.01°C) to detect hormonal micro-variations, with results in 8 seconds -Stores data to help better understand your body day after day -Includes a booklet to better understand your body -Reliable, discreet, and easy to integrate into a daily routine as soon as you wake up