Features 1、Widely Applicable: Digital solar thermometer, which can be widely used to measure water temperature in swimming pools, bathtubs, etc, with accurate measurement. 2、Range Measurement: This solar digital thermometer has the highest and lowest temperature function, it can measure the temperature from ‑20℃～+70℃. 3、Solar Powered: Thermometer has a built in 160mAh battery and is powered by solar energy, just put it in the water and wait for 1‑2 minutes to display the reading. 4、Easy To Read: The pool water temperature meter is displayed in ℉ and ℃ with a clear digital display, which is very easy to read and very convenient. 5、Compact: The digital thermometer is small, lightweight, and comes with a drawstring for easy access, making it suitable for use in all swimming pools. Specifications Item Type: Solar Thermometer Material: ABS Temperature Range: -20℃~+70℃ Battery Parameters: 1 x LR44 Button Battery, 160mAh (Built in) Weight: Approx. 108g/3.8oz Package List 1 x Solar Thermometer 1 x Rope