1,Support date synchronization 2,extend the phone using time 3,the cover will ... : -10°C— +45°C Weight: 85g Dimension: 146.6*72.2*14.5mm2.Instruction1.Slide your Samsung i9300 into the power ... make sure i9300 is well connected with the power case; 2.ON/OFF switch: press the on/off switch to ... for bulk order after received the payment of the order.2. Our payment terms including Wester union, T/T , paypal, ...