I purchased this product from prestige smart kitchen after a lot of research on the internet.prestige is a good brand and I was expecting a great deal from this OTG as my first attempt was baking a cake.I use to bake perfect cake in old style round oven but this oven started burning my cake base.my cakes burned one after another and I was using single bottom element for baking cake.I had a doubt on the temperature management of the otg to confirm the same, I had an oven dial thermometer to check and confirm my doubt.thus I noticed that, if you use only one filament ( either top or bottom) this OTG keeps on heating on till the maximum temperature, regardless of the temperature set on dail.so my dail was 100° and I measured that the OTG was heated till 250° ( that's a huge difference and the result is burnt food) . Therefore I logged a complaint with prestige TTk and conveyed them this issue.they kept my OTG for two months and still newer figured out the issue.service is not equipped to repair the Owen.thus they were asking me for my thermometer, I took it to their service centre to help them & identity the issue.the OTG body was dented and scratched due to the way they handled.as my product was under warranty so replaced my otg with another product & not the OTG model.so I did not loose money but the journey was difficult and I wasted more than 3 on it. Very bad prestige products and poor service.