The earth and constellation globe has an automatic light sensor so when the globe is turned on and the surrounding area is dark the globe will transform into a beautiful glowing globe showing the star constellations. There is also a handy override switch which allows you to turn off the night-time view and thus conserve battery power. You can also purchase an electrical adaptor separately (not included) that you can plug into the globe and power it off mains electrics. each box contains a specification to enable you to purchase such an adaptor. Earth by day – space by night – 2 globes in 1 !  the ideal gift for would-be astronomers and budding geographers. Unique globe shows planet earth by day and transforms into a constellation globe at night.22.8cm world map showing geographic features by day.by night, in a dark room, the illuminated star map shows constellations.light sensor automatically turns globe to night feature when dark. Recommended Ages: 8 Years And Up Measurements: 9.65 Length/Inches Base Material: 100% Plastic Care: Wipe Clean Country of Origin: Imported p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 15.0px Calibri; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} WARNING: CHOKING HAZARD – small parts. Not for children under 3 years.