WITH TIMER FUNCTION! Turn it on, it lights up for 6 hours and then turns off for 18 hours in 24 hour cycle, save the trouble to turn it on and off every day LASTS LONGER AND BATTERY INCLUDED! Sustains the cycle up to...

✔Measures pool and spa water temperature and provide accurate reading ✔Large temperature reading display, in Fahrenheit and Celsius. Reads Up to 120 Fahrenheit and 50 Celsius ✔Premium quality, Built from Durable Material & Shatter Resistant ✔For All Outdoor & Indoor Swimming Pools, Spas, Hot...