FDK Basal Body Thermometer for Ovulation, Large Dual-Color Backlit Display & 1/100th Degree High Precision, Accurate BBT Thermometer with Memory Recall Fertility Thermometer for Women Natural Tracking

Product description

What does “LO” mean after powering on?

This is a normal feature and does not mean the battery is low. “LO” stands for “Low Temperature.” It simply means the device is ready to measure since the room temperature is lower than body temperature.

Why is my measurement time longer than 60 seconds?

Normal measurement time is generally between 60-90 seconds. If it takes longer than 90 seconds, it is likely that the measuring probe is not positioned correctly and needs to be checked.

How to Switch Between ℉/℃？

Press and hold the Power button for 12 seconds until the screen shows “-℃” or “-℉.” Release the button, then press it again to between ℉ and ℃.

At What Temperature Does the Screen Turn Red?

The measured temperature >109.2℉ (37.8℃), indicating a fever.

What could cause inaccurate results?

Factors like lack of sleep, staying up late, alcohol, fever, stress, or intimate contact the previous night may all lead to fluctuations in your basal body temperature and affect the reading.

【Unmatched Precision】Track subtle temperature changes with ±0.01°F high-precision sensors. This basal body thermometer supports fertility tracking with reliable readings and a flexible probe for oral, armpit, or rectal use.
【Large Backlit Display】Read your temperature clearly with a large dual-color LCD screen. The soft backlight makes early morning BBT checks easier, while color indicators help you quickly view temperature status.
【Memory Recall for Tracking】Review your last BBT reading anytime with built-in memory recall. Designed for manual fertility charts. Note: Not Bluetooth-enabled. Avoid consecutive measurements for best accuracy.
【Stable 90secs Morning Checks】Get consistent readings in about 90 seconds, ideal for early morning fertility routines. Designed for women tracking BBT charts, natural cycles, and family planning.
【English & Spanish Voice】Enjoy helpful English and Spanish voice of under tongue thermometer prompts guide every reading for stress-free fertility tracking. Long-press 4s to turn voice on/off, 8s to switch languages, and 12s to change °F/°C. Audible alerts notify you when measurement is complete.(Auto shut-off)
【Portable & Reliable Design】Lightweight and travel-friendly with IP22 splash resistance. Includes battery and a 1-year warranty. A practical basal thermometer for women tracking fertility at home or on the go.