As in general periodic of one year for full replacement guarantee against any product defect and 36months limited warranty from the date of purchase. In detail winker light has two basic sections [1] Electronic circuitry [2] Hardware.
[1.] On the electronics side there are parts like flasher/timing circuit, LEDs, Solar panel and battery in this we give full one year replacement guarantee from the date of purchase.
[2.] On the Hardware side is made of the metal, MS and glass so their life is more then one year
Guarantee will not be effective in case of mishandling of the unit and any accident caused by beyond control like tug/ship/tanker out of control movements, damages due to foully rough weather etc.