I buy this product 2 year ago . when I started to using this cooktop .the electricty bill increase 50 to70% more . it is very easy to use this but there is lot of problem for cleaning this product. style and design is very good . there is no need of improvement.durability of this product is on below of its average .service and support of this product of this product is very bad . overall it consume high amount of bill while using this so this is not been more use. if they done some improvement then I think it become useable.