Approximate size: 142.5 mm x 95 mm. Carved by the latest 3D, Surface and Line engraving technologies (attractive in all directions). Not using the laser engraving method which only provides 2D surface effect. The clock runs on one AA battery (not included).
Lighting: Equipped with the highest quality power saving LED lights, can be powered by either two AAA batteries (not included) or powered by USB power supply cable (not included), the lights can last for 100,000 hours. Five colors to choose from, blue, Red, green, yellow, or white.