2nd generation! This fertility bracelet helped me get pregnant with my kiddos after #1 and infertility treatments. It was a lifesaver! I am now passing it on so I’m not tempted to wear it and get pregnant again, haha. The little band that holds the strap down after it’s put on broke off from constant wear, but it doesn’t affect its ability to work or function, as I used it with my last pregnancy without it. Charge it after each nightly use and synch each morning with the app to get most accurate readings.