These beautiful Christmas lights in number 2, can be used with 3 LR6 batteries for each, but in the case of LEDs, consumption will probably small.The battery operation gives great freedom of design, since the proximity a decision does not prove nécessaire.Elles can therefore be installed wherever the urge takes sentir..Elles work very simply via a power button, located on the base of the batteries, which also allows to opt for a fixed position or clignotante.Le battery compartment is not waterproof, indoor use is préférable.Le value appears TOUTA me excellent!