Specifications:Water temperature stickers do not use traditional materials, water temperature stickers usenew non-toxic and environmentally friendly liquid crystal materials (characteristics: waterproof and reusable).The baby's constitution is weak. Once the temperature of the bath water cannot meet the requirements, it is easy to catch a cold or burn. Using a temperature card can better control the temperature, preventing the water temperature from being too low or too high.Water temperature stickers made of liquid crystal materials can provide more scientific, safe and accurate data. Water temperature stickers are immersed in water for more than 15 seconds to reach the green area. The water temperature is suitable.If the green temperature area is not reached, the water temperature is too low or too high.Item Name: Thermometer CardMaterial: PPDisplay Range: 32 to 42 Degree CelsiusResolution: 1 Degree Celsius/1.8 FahrenheitFeatures: Convenient, Easy to Use, Safe, Temperature MeterDimension: 10cm x 10cm x 3cm/3.94" x 3.94" x 1.18" (Approx.)Notes:The measuring result is just for reference, you'd better feel the water temperature with you hand before bathing your baby.Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:10 x Thermometer Cards10 x Stickers