A immersion rod generally used for heating water for bathing .this winter I brought a vintage immersion rod .its heating rate is good within time limit.this is easy to use and user friendly. its durability depends upon how much I used and how I placed it.its degin are simple and easy to care.rod are made of corrosion proof material so it is free from any corrosion problem.its save money as well time.i always take a precution when Im using it to keep away children from it.i can say in one word for this product is value for money .