Accurate and reliable readings for family planning. 60-second readout. peak temperature tone and last-reading memory recall. fahrenheit/celsius measurements. waterproof for sanitary cleaning. automatic shut-off and low-battery indicator. non-replaceable sealed battery for safety. one-year supply of ovulation charts. includes: thermometer, 2-piece full storage case, 12-month supply of ovulation charts, 5 probe covers, long-life lr41 battery and english/spanish instructions.