Features:<br />--High accuracy and fast response.<br />--Break-resistant and child-safe probe.<br />--Low battery indication.<br />--Light and easy to carry.<br />--The digital thermometer can only read as o C、 it can not be changed to o F.<br /><br />Specifications:<br />1. Display range: 32.00~43.00o C<br />2. Min. Scale: 0.01 o C<br />3. Accuracy: ≤ 0.05o C<br />4. Measurement time (reference only、 it differs from people to people): <br />A) 60≤ 10 seconds (oral) <br />B) 100≤ 20 seconds (underarm) <br />5. Battery: 1.5V button battery (LR/SR-41) <br />6. LCD: 20 x 7 mm <br />7. Size: 129 x 22 x 14mm<br /><br />Measure Basal Body Temperature<br />--Basal temperature is the temperature of a specific body part right after waking up.<br />--Start measuring BBT during the first day of your monthly menstrual cycle. The equipment needed for the procedure is basic.<br />--You will also need a chart showing temperature during each day of your cycle. <br /><br />Measuring BBT<br />--BBT must be measured directly after you wake up. <br />--To get precise readings、 you need to measure basal body temperature at the same hour each day.<br />--Get started during the first day of your cycle、 that is the first day during which you get a menstrual bleeding. Measure your temperature in the morning and record the number in your BBT chart.<br />--The typical pre-ovulation BBT will vary between 36.1 and 36.8 degrees Celsius、 though these figures can be strictly individual. The important thing is to notice a change during one day of your menstrual cycle. This high temperature should remain unchanged for at least three days ? your ovulation period. A rule of thumb is that temperature after ovulation will remain above 36.5 degrees Celsius.<br /><br />Packaged included:<br />1 x Digital Ovulation Thermometer<br />1 x Manual