LEDIKON 20 Pack 20 Led Wine Bottle Lights with Cork,3.3Ft Silver Wire Warm White Cork Lights Battery Operated Fairy Mini String Lights for Wedding Party Wine Liquor Bottles Crafts Christmas DecorVibrant and bright micro LEDsLEDIKON wine bottle lights made of 3. 3FT silver coated copper wire with 20pcs vibrant and high bright mini leds,which is flexable strong and durable,3. 3ft will be much more easy for you to drop into wine bottles compare with others Quality batteries pre installedThe bottle lights are battery powered(batteries are pre installed in the cork),offer 48hours constant lighting,even longer if use with breaks, no plug in,no need