The subra marker light from smart solar has a heavy glass lense for optimum light dispersal it is solar powered but with battery backup giving great year round perfomance having no wires it can be installed with the minimum of fuss and has a bright 5 lumen bulbr the light is ideal for illuminating pathways and is finished in a durable brushed stainless steel fully charged the light will last up to 6 hours and automatically illuminates at duskr r up to 6 hours run timer illuminates at du