The multi-coloured LED lights come in a pack of 20, and the colours are red, blue, yellow and green. Each light is individually placed 25cm apart and the total length of the festoon lighting stretches over 4.75 metres.These vibrant string party lights are battery operated and require 2 x AA batteries (not included). The lights also have an innovative ‘Auto-Rest’ functionality meaning that they switch themselves off after 6 hours in a bid to preserve the LED light bulbs and avoid any overheating.If you’re looking to bring some colourful decorative light to your bedroom, common room, office, dorm room, kitchen, restaurant or any other indoor space, then these lights will be perfect for you.