688 x 3840
688 x 3840 = 2641920
Example of 688 x 3840 pixels banner dimensions.
638 x 3890 648 x 3880 658 x 3870 668 x 3860 678 x 3850
688 x 3790 688 x 3800 688 x 3810 688 x 3820 688 x 3830
688 x 3890 688 x 3880 688 x 3870 688 x 3860 688 x 3850