This Amazon Renewed product will be in an unboxed or refurbished condition and has been professionally inspected and tested by an Amazon qualified supplier. Box and accessories may be generic (headphones may not be included) 3.86 centimeters (1.52-inch) TFT capacitive touch screen with 128 x 128 pixels resolution Samsung proprietary operating system with 153MB RAM 800mAH lithium-ion battery providing talk time of 7 hours and standby time of 720 hours