Kingston is the best brand for the external storage with best price. It is easily available in all mobile stores and online also.The pendrive cost is 280rs and the speed of it is 4mbps for second and it has good functions like plug and play and works almost in every operating system and it even work with the OTG cable in the Smartphone and gives the same speed of data Transferring and receiving. They gave me 1 year warranty and I am suing it since last 5 years without any problem and I love this product.