Rainbow Heart Lamp Cordless & Rechargeable for convenient salon use Lithium battery , Battery Working time @4-6 hours, full charging time @ 3 hoursHigh Power 98w – 30pcs Powerful 365nm + 405nm LEDs – Fast Curing any uv or led gels 4 LCD time display timer: 30, 60, 90 and 120 second Fast auto sensor activaited Spacious interior for all hand sizes & nail lengthsRemoval base plate easily for feet pedicureMirror Interior for even light distribution50,000H Life time never need replace led bulbsHeart Lights up While timer is on