Safe Design:Instant Water Heater With high quality stainless-steel protect cover,will effectively prevent the heating element is in direct contact with people or animals ,it is rust proof and durable, design for long term use. The quality is safe, stable and reliable. Fast Heating:2500W high-power electric water heater can heat up to water in minutes. Heat dissipates to the water faster by flowing through the holes in the guard. The heater needs to be completely immersed in water in working condition. Please take out the immersion water heater before touching the water! Do not use it for more than 3 hours continuously! Please do not plug the two heaters into the same outlet to avoid fire hazards. Wide Range Of Applications:Our portable pool heater suitable for portable bathtub,mini pool(Using more than one),sink, bucket, washbasin,etc.Make sure the container can hold hot water when using it.This immersion heater is handy and super lightweight, making it perfect for travels and road trips.Note, it is not suitable for using in big swimming pool . Easy To Use :Take Electric Submersible water heater immerse in water at proper level,Plug into any grounded AC outlet.Check power indicator light to make sure immersion water heater is working .Please note: people and animal can't be in the water while the heater is working.