You can’t always watch your baby while they sleep. But you can know how they’re doing with the Sense-U Baby Breathing Monitor. This compact gadget hooks to your little one’s diaper, tracking their breathing. With its built-in clasp, this baby sleep wearable stays securely on your child’s diaper while they rest. Because it uses Bluetooth Low Energy communication, this breathing monitor emits the lowest amount of radiation possible. Moreover, this technology works up to a range of 50 feet—15 meters—meaning..