Baby Bath Thermometer Alarm LCD Display Fish Shaped Waterproof 0‑60 Degrees Celsius Water Temperature Tester Item Type: Baby Bath Thermometer Material: Plastic, Electronic Components Function: Measuring water temperature, baby bathing toy, room temperature test, clock, timing, high and low temperature warning, 3 colors backlight. Model: MTY 805 Waterproof Grade: IP67 Waterproof Size: Approx. 9.2 x 9.2 x 3.5cm / 3.6 x 3.6 x 1.4in Temperature Range: 0-60°C Temperature Measurement Accuracy: ±1°C, Resolution: 0.1°C Maximum Time Range: 59 minutes and 59 seconds Low Temperature Suggested Range: below 35°C High Temperature Prompt Range: Above 39°C(adjust between 37°C and 46°C, default 39°C) Battery Type: 2 x LR44(or AG13) Button Battery 160mAh (Included) It can be used for about six months.