THIS USB SALT STONE LAMP IS HAND CARVED FROM SALT EXCAVATED FROM THE HIMALAYAN MOUNTAINS. WHEN THE SALT IS HEATED, IT RELEASES NEGATIVE IONS, ALSO KNOW AS “VITAMINS IN THE AIR”. THE NEGATIVE IONS ARE SAID TO CALM NERVES, AND PIROFY THE AIR QUALITY TO GOVERNMENT YOU A HOLISTIC EXPERIENCE. THIS PINK HIMALAYAN SALT LAMP CHANGES COLORS EVER SO SOFTLY FOR A RELAXING SOOTHING EXPERIENCE! (SEE PICS AND VIDEO.) LOTS OF GREAT BENEFITS WITH SALT LAMPS! SO PRETTY, WOULD BE PERFECT IN YOUR BEDROOM, OFFICE, OR LIVING ROOM EVEN YOUR BATH TUB AREA…..JUST PLUG INTO ANY USB OUTLET AND YOU’RE READY TO ENJOY! APPROXIMATE DIMENSIONS: 5” HIGH 11” ROUND SITS ON A WOOD BASE WORKS WITH ELECTRICITY ISB CORD PLUG. PLEASE NOTE THESE ARE NATURAL SALT ROCKS THAT COMES FROM NATURE AND HAVE IMPERFECTIONS, LINE CRACKS ARE COMMON AND PART OF THEIR LOOK, THEY ARE NOT SMOOTH. I HAVE MANY IN MY HOME THAT ARE QUITE LARGE AND I LOVE THEM ALL!! THIS ONE IS IN PRE-LOVED EXCELLENT CONDITION. LIGHT WORKS GREAT AND NO ISSUES WITH THE USB CORD. LAMP IS VERY CALMING AND PEACEFUL WHEN ON. PLEASE REVIEW PICTURES AS THEY ARE PART OF THE DESCRIPTION.