I bought a headphone on 1st january 2018.they delivered my product on 5th january.so I can say delivery is not so fast but not very slow and the product quality is very good.amazon india has a huge stock of products and collections are very good but I think price of the products on this site is little bit higher than other sites because I bought a product 850 ruppes and later I saw its price 800 on other sites.customer service is really good.app is not bad but I think have to improve it with more features.