Features:<br/> The accuracy is ± 0.05°C/0.09°F.<br/> With blue backlight.<br/> 60 days' memory.<br/> Large LCD monitor. Large LCD back-lit display with soft light.<br/> With audible alarm.<br/> Takes a test in 120 seconds.<br/> Switchable Celsius/Fahrenheit modes.<br/> Auto power-off.<br/><br/> Specifications:<br/> Operating voltage: 3 V DC.<br/> Accuracy: ± 0.05°C (32-42.99°C).<br/> Battery life: approximately 1000 tests.<br/> Temperature sensor: thermistor.<br/> Measurement method: oral.<br/> Measurement range: 32-42.99°C (89.6-109.38°F).<br/> Operating temperature and humidity: +5 to +40°C with 0-85% RH.<br/> Storage temperature and humidity: -20 to +60°C with 10-95% RH.<br/> Auto power-off: shuts down after about 5 minutes from the last test.<br/><br/> Accessories:<br/> 1 x battery (inside). CR2032<br/> 1 x instruction manual <br/> 1 x ovulation chart.<br/>