Get the temp, no butts about it! The 3-in-1 True Temp Thermometer for rectal, oral, or armpit use will be your fever-fighting BFF. It delivers a 10 second quick read with an automatic second check, so you don't have to second guess. Plus the Parent Proof Stopper + LED lights makes tush temp checks worry-free. 10-SECOND QUICK TEMP - Get a quick reading of baby's temp in just 10 seconds 30-SECOND DOUBLE CHECK - Don't second guess with this double-check reading without reinserting USE THREE WAYS - Can be used orally, under the armpit or rectally NIGHTTIME READY - Digital backlit screen and LED light helps makes nighttime checks a breeze RECTAL STOPPER - Stopper keeps thermometer from being inserted too far into the rectum