Meet the first FDA-cleared fertility tracking wearable Worn only during sleep, the Ava bracelet tracks 5 physiological signals. It uses machine learning algorithms to extract from this data the 5 most fertile days of the menstrual cycle. Comes with one Ava original bracelet and charger cord. Use with the Ava app on your phone to sync your data. https://www.avawomen.com/?utm_source=invitereferrals&utm_medium=others&utm_campaign=US_Referral_Program&utm_content=17438998&ir_ref=11278-10619-17438998-others-mobile-1684631967-678-60-0&ir_notify=10619&ir_co=ASHLHSUD