Long lasting colourful display inside or outnote these lights are for use indoors and outdoors this light set has a bulb span of 20 metres with an additional 10 metres of cable from the plug to the first bulb orders must arrive by noon monday 19th decemberled lights on a dark green cable will create a bright long lasting colourful display fitted with a multi action electronic transformer effects are combination in waves sequential slo go chasingflash slow fade twinkle