Oral, underarm or rectal use. Soft flexible tip for added comfort. Fast 10 second read-out (10 seconds time based on average of times for rectal use un clinical study). Fahrenheit or celsius. Easy to read night light display. Easy to Use: Last temperature recall; Fast, 10-second read out (10 seconds time based on average of times for rectal use un clinical study); Battery and storage case included; Automatic shut-off; Oral, underarm or rectal use; Signals when complete; Clinically proven to match glass thermometer accuracy; Large night light display for easy reading; Can be used in either fahrenheit or celsius mode. Added Safety: No glass or break, mercury free. Guaranteed accuracy. Made in China for 3M.