High Power: portable immersion heater will heat water toward to boiling when you plug in(can't boiling the water), just make sure the water is always full cover the water immersion heater.greatly saving your time.Rust Proof Stainless-steel Guard - The heavy duty 304 stainless-steel guard on the electric bucket heater protects the heating element from directly contacting persons or animals. it is rust proof and durable, design for long term use. The holes on the guard dissipates heat into the water faster.Simple Operation: Place heater in a container designed to contain boiling water, fill the container with water to full cover the heater shield(including stainless-steel guard and plastic part), plug heater into a properly grounded 120V AC outlet, make sure the unit is on, Feel the difference in a few minutes Widely Application: The immersion water heater can be used in different size container like bucket, basin, bath tub, mini inflatable swimming pool, etc.please make sure the container design to hold boiling water, or unplug before boiling.perfect for winter time job such as car washing, heat your farm animals water, your tiling water on the job site ect.Pure copper wire PVC sheath. The power cord is made of pure copper with PVC sheath, which is resistant to high temperature and oxidation and is not afraid of leakage, durable and safe to use