The Lithium Battery Polar Lifejacket Light Automatic W3P, with part number 1340, is a safety device designed to operate in extreme conditions. It features a durable ABS Polycarbonate / TPE construction and a lithium thionyl chloride battery, ensuring functionality from -52°C up to +65°C for storage and -1°C to +30°C when operating. This light, weighing approximately 31.3 grams, provides a minimum light output of 0.75 cd for at least 8 hours. It is equipped with a white flashing LED that activates automatically upon contact with water or can be manually operated. Approved by classification societies such as SOLAS, MED, and USCG, it is an essential component for maritime safety, meeting rigorous standards for use in polar and cold waters.