I brought this laptop before 6 month. its very useful and I easily do my work. its very smooth keypad. we all are know that Sony is very old and its all brands having high quality so this laptop is one of them. its durability is up to 3 to 4 hours. its all function are very easy as well its support all windows. there are many services & support are provided in this laptop. its pixel quality is HD. its RAM, ROM and Disk all are very compatible. its price is RS. 43, 990.