Features:Clear and Easy-to-read numbers, bright and high contrast display.12/24 hour mode with calendar & temperature displayed along the bottom.Great finish - Front panel (glass), Frame (aluminum alloy).Can be placed on a table or hung the wall.Energy-saving--- less than 3W power consumption.A button cell battery included for memory back-up.(Notice: This battery is just fot memory back-up. The clock cannot display anything during a situation like the blackout. )We recommend that the red color one would be perfect for large public areas.The blue color would be perfect for enclosed areas.Specifications:Clock Size: 480mm(L) x 185mm(H) x 50 mm(W) or 18.9'' (L) X 7.3'' (H) X 2'' (W)Digit Size: 3-inch tall time digits, 0.5 inch tall calendar & temperature digitsPower Consumption: 3 wattsWeight: about 2KGIncluding:1 X LED Clock1 X 6V Power Adapter1 X 1.5 Meters Power Cord.