The dials of each clock are made of "Bri-Curtain" LED arrays formed of aluminium, designed to both save weight and offer less resistance to wind.[3]
Hands
Each pair of hands is made of seawater-resistant aluminium, statically and dynamically balanced. They measure 7,300 millimetres (290 in) for the minute hand, and 5,500 millimetres (220 in) for the hour hand.
2013 fire
On April 3, 2013, the Facade Clocks caught fire and one side of the 40-story building[4] was engulfed in flames. No one was injured or killed in the blaze. More than 100 firefighters and 16 fire engines fought the blaze.[5] The building known locally as "Olympus" housed a 5 star luxury hotel and an apartment belonging to French film star and French tax exile Gérard Depardieu, whose apartment was on the 27th floor facing the "Heart of Grozny."[6]