The Safety 1st 3-in-1 Nursery Thermometer lets you choose the best way to check temperature when your child isn't feeling well. It can be used orally, rectally, or under the arm and beeps when the reading is complete. The flexible tip is more comfortable for baby during a rectal reading and features an over-insertion gauge that gives parents added confidence while checking for fevers, so that they can focus on helping baby feel better. The 3-in-1 Nursery Thermometer includes both a protective storage case and a long life battery.