Multi-Function (8 Settings). Waterproof LED Lights. Supplied with 10m extension cable. Can add connect or disconnect lights to every set. Supplied in lengths of 100 LED's or 300 LED's which can be easily connected together. Easily stored and less chance of tangle. 10cm between LED's. Total Length between first and last light: 100 LED's = 10m 200 LED's = 20m 300 LED's = 30m 400 LED's = 40m 500 LED's = 50m 1000 LED's = 100m Available with Battery Box or Low Voltage Plug D Sized Battery Box Easy 'Click to Close' Waterproof black battery box with rubber seal (no fiddly screws). 3 X Size D Batteries required (not included). Auto Timer (6 hours on 18 hours off). Please Note: Cable colour does not affect the colour of the battery box. Battery box will always be black. Low Voltage Plug Optional Timer (6 hours on, 18 hours off). Part of our 'Connectable' Series of lights All of our 'Connectable series are interchangable, from the lights, to the power sources. Realise that you have too many lights for a battery box and they are starting to dim? You can easily change it to a Low Voltage Plug. No plug socket near your lights? Why not add an extension cable or change over to a battery box? Didn't buy enough lights? You can easily purchase more and just connect them together. Decided that there isn't enough lights around your Christmas tree? You can change the string lights over to cluster lights, or just connect more. Easier to store, and with less tangle, as they can easily be disconnected again when your putting them away after Christmas.