Material: Silicone + ABS Shape: Round Temperature Reading Range: -20°C ~ +70°C / 32℉~ +122℉ Application: Swimming pools, spas, pool spas, hot tubs, aquariums and fish ponds.. Package Included: Solar Pool Thermometer The solar pool thermometer is lightweight and compact, which is very easy to carry anywhere! Our water thermometer comes with a convenient drawstring, which can prevent it from floating and avoid sinking or getting lost. Note Please allow 0-2cm errors due to manual measurement. Thanks for your understanding. The color of the item shown in the pictures may be slightly different from the actual item. Please refer to the actual product. This product cannot be directly exposed to the sun in an outdoor swimming pool (the sun temperature is higher than 60 degrees). It cannot be exposed to direct sunlight for more than 4 hours continuously, otherwise there will be water seepage, disordered display and other phenomena.