Usage Tips:Electric Water Heater Element Immersion Heater For Boiling Bath WaterWARNING -The heater needs to be completely immersed in water in working condition. Before touching the water, please pull out the power plug first, and then take out the water heater Please do not use it for more than 3 hours continuously If the capacity of your bathtub or small swimming pool is large and more than 2 water heaters are needed for heating at the same time, please do not plug the two heaters into the same outlet to avoid fire hazards.HEATING WATER IN MINUTES - Submersible electric heater makes water heating more efficiency and boil 5 gallon of the water in minutes, all you need to do is just put the heater in to the water then connect the 120V power supply, easy to use. Gifts: digital thermometer with sticker and LCD digital thermometer (including battery)HIGH QUALITY & SAFETY - Features of high quality copper wire for carrying more electricity, with ABS outer and anti-rust stainless steel guard to effectively prevent the heating element is in direct contact with the human body, safer to use and minimize accidents.We select the high performance heating element which has been strictly tested and with over 10,000 hours service time, sturdy structure and fine workmanship to ensure the superior quality, durable and reusable.MEETING YOUR VARIOUS NEEDS - Having a super comfortable bathing in the cold days, or use our heater to boil the water and have a nice foot soaking to keep your feel stay warm for the whole nights. Perfect for concrete work, farms, car snow-cleaning, wallpapering, etc..