Package Include: One set of 4 digit 1 inch LED digital clock kit PCB Dimension: 98 x 35 x 1.6 mm (L x W x H) Case dimension: 105 x 46 x 29 mm (L x H x D) Digit dimension: 1 inch Working voltage: DC 5V Case material: crystal case Circuit: welding assembly Color: Red LED with case kit.