Ginger Snaps BROWN KEY RING Interchangeable Jewelry Accessory SN90-50 DUAL MODE: Forehead Thermometer (suitable for all ages) and Ear Thermometer function ( only for the child above 3 months) - the easiest and most practical way to take a temperature. EASY AND RELIABLE: One button operation.(Batteries Not included) Just select the measuring mode, and press the button. The results are displayed on the screen instantly. Easily switch from F to C. SAFE AND HYGIENIC: Compared to mercury thermometer, there is no danger of breaking the glass or swallowing mercury. It is totally safe for children to use. BACKLIT LCD AND MEMORY FUNCTION: A backlit digital LCD screen lets you easily read temperatures even in dark rooms, so your child can sleep soundly without needing to turn on the lights. Effortlessly recall the last 20 measurements. LET YOUR BABY SLEEP PEACEFULLY: Just when you have finally put your fussy baby down to sleep, the silent mode function will ensure that you can still monitor your sick baby without waking him/her up. Unlike other thermometers that will only keep beeping with fever indication, our thermometers show Color Indication as well for fever warning.