Usage Tips:[Heat water faster]: high-power immersion water heater can make 5 gallons of water warm in a few minutes. While camping can bring this portable bucket heater and can enjooy shower even outside .In the cold winter, you no longer need to wait fora long time for warm water. When you get an above grond pool heater , you can enjoy hot water in just a few minutes. [Easy to Use] Just put the Version pool warmer for inflatables into the water and connect it to power supply without much fuss.. Please note that the heater must be completely immersed in water during use. Through water temperature measurement,you can base on temperature. Note: It is recommended that the continuous use of the tap water heater should not exceed 3 hours.If heat the small pool above ground inflatable pool please kindly check the pool size before purchasing. [Portable and Versatile]: You can use the portable electrical submersible heater in many occasion. It supports to use in containers of different sizes, such as buckets, basins, bathtubs, mini inflatable portable swimming pools, etc. Please note if usingin outdoor Inflatable swimming pool one should not be enough and not suggest to use for big swimming pool .This is the first choice for home and outdoor work.This portable electric camping water heater is handy and super lightweight [Warnings]: Do not ever use this immersion heater for inflatable and bathtub to heat. While using water dont put your hand into the liquid when the electric water heater is plugged in.When the liquid is hot, unplug the immersion heater element then takeout from the container.The protection plug of leakage is not a power switch.Make sure the water level is enough before use. Read the instructions carefully before using .