Each of the clock's four faces measures in diameter and are illuminated by 2 million LED lights, with four oriented edges, just above the clock alongside huge Arabic script reading: on the north and south faces and on the west and east "There is no god but Allah. Muhammad is the messenger of God.". Four golden domes on pillars on all the corners are also present. Another 21,000 white and green coloured lights, the same as the Saudi Flag, fitted at the top of the clock, flash to signal Islam's five-time daily prayers, and are visible as far as away. On special occasions such as new year, 16 bands of vertical lights shoot up into the sky. The clock's four faces are covered with 98 million pieces of glass mosaics. The Saudi coat of arms is displayed at the centre of each clock behind the dials. The minute hand is long, while the hour hand is long.