Total length of the string light is 10 ft/3m with 20 clear photo-clips (LED). Each clip contains an LED light makes it a really cool way for displaying holiday cards, artworks and hanging the light weight items. Battery operated -- requires 2 AA batteries (Not Included), great for indoor use anywhere, also safe for outdoor use in a covered area. Ideal gift -- great for family and friends to display special pictures. Decorative lights -- perfect lighting decoration for living room, dormitories,and all kinds of the parties.