This thermometer is amazing! You can use this in ear or on forehead to get accurate reading. No need to wake your little one just point and click and you have an instant reading. Also has a light that lights green when no fever and red if running fever. Comes with Two AAA batteries in box. I have purchased several of these so we can have one at home, one at grandma’s and one in diaper bag at all times. Fast shipping. Definitely will purchase again!