- Create a cosy atmosphere with these multicoloured festoon string lights- They're low voltage to keep running costs down - there's no batteries to replace either- You can connect up to 60 bulbs from the same range for a brilliant display- Perfect for indoor and outdoor use, they're ideal for garden parties or your summer house- With 50 cm light spacing and 9.5 m length, you've got plenty of room to decorate and get creative