Model No.: EBT-100 Monitor Your Ovulation Cycle with Easy@Home. The newly launched EBT-100 Basal Thermometer helps you measure your basal temperature with clinical high measurement accuracy for ovulation tracking and natural family planning Clinical High Accuracy (± 0.05 ℃ / ± 0.09 ℉ ): Measures Basal Body Temperature (BBT) to 1/100th of a degree precision (e.g. 97.41 F) in Celsius or Fahrenheit. The basal thermometer takes longer time to get the result than regular oral thermometer because it reads more precision. Measurement takes about 90 seconds. Large Blue Screen With Backlit: Large display with backlit for easy to read in the dark. Recall 30 temperature records in memory Waterproof and Flexible Tip: Waterproof and Flexible thermometer tip for easy to use and clean. Soft beeping alarm signals the completion of test. No need to count timer. Fever beeping alarm warns user the fever condition.