Family and life planning in harmony: natural methods for cycle tracking and purposeful family planning can be easily implemented. The modern temperature measurement technology of Beurer basal thermometers work in conjunction with a cycle tracking app to offer entirely new possibilities for predicting fertile and non-fertile days more reliably Features: - Display to 2 decimal places - Use with the "Ovy" app for natural cycle tracking1) - Contact-measurement technology - Suitable for oral & vaginal measurements - Flexible measuring tip - Waterproof - Can be disinfected - Measurement accuracy: +/- 0.05 degrees C at 35.00 degrees C- 38.00 degrees C (ambient temperature 18.00 degrees C- 28.00 degrees C) in remaining measurement range: +/- 0.1 degrees C - 1 memory space - Automatic switch-off - Acoustic signal when measurement is complete - Medical device - With protective cap - Free download of the "Ovy" app Manual recording of temperature Beurer- German Engineering 5 year warranty What's in the box Basal thermometer Instructions for use 1 x 1.5 V LR 41 battery 1 x Protective cover What's in the box Basal thermometer Instructions for use 1 x 1.5 V LR 41 battery 1 x Protective cover