The Kinsa Smart Ear Thermometer takes an accurate read in one second, at the push of a button. It connects to your phone via bluetooth and is gentle enough to use on a sleeping or squirmy baby. via Kinsa.com. The Kinsa Smart Ear Thermometer also:, Connects to your phone via Bluetooth, Tracks health history for the whole family, Offers real-time guidance on next steps, Tells you what’s going around, Instant read at the push of a button, Comfort grip, gentle on baby, No probe covers required, easy-clean surface, Light-up screen for nighttime readings, Professionally accurate, Easily shares details with your doctor and Stores up to 50 readings in the device.