Shatter resistant construction This floating spa thermometer is made from shatter resistant material to provide durable use in regular spa settings. Accurate readings in two scales Displays precise water temperature in both Fahrenheit and Celsius, with a maximum reading of 100°F / 40°C. Easy to read, quick access Features a large temperature display and floats on the water, allowing easy visibility and fast readings from anywhere at the spa edge. Separable design for flexible use The floating ball and thermometric stem are separable, enabling use as a submersible thermometer to measure bottom temperatures in a pond. Use scenarios In a spa or hot tub: monitor water temperature to maintain comfort and protect sensitive skin from overheating. In a pond: detach the stem to submerge and measure bottom water temperature, aiding fish and plant health management. For quick checks in water features: place the unit on the surface to obtain immediate readings during maintenance or testing.