The Earth and Constellation Globe is a factually correct globe clearly showing the countries and natural features of the world with political boundaries and major cities starred at a scale of 1:55,900,000. An integral light sensor automatically switches the globe to night view when darkness falls to show an illuminated star map featuring 88 constellations with their common names and major stars. Elegant design and sturdy metal constructionBattery operated: takes 4 x C 1.5V LR14 batteries (not included)Mains jack for AC/DC switching adaptor (input 100-240V~50/60Hz, 500mA max, output 6V O.1A) (Mains adaptor not included)Globe Diameter: 22.8cm Unit height: 34 cm A fascinating tool for geographers and astronomers alike.