HemiLight 3 - Automatic Survivor Locator Light The ACR Auto HemiLight3 flashing survival light attaches to almost any style life jacket with a quick and easy installation. Smaller than other approved lights, the HemiLight 3 features rounded edges to maintain the integrity of inflatable life jackets. Attachment loop accommodates webbing up to 2 5 cm in width. The marine tough design ensures years of useful service.The HemiLight 3 offers a high-intensity flashing LED light that automatically activ