Smaller than other approved lights, the HemiLight™3 features rounded edges to maintain the integrity of inflatable life jackets. Attachment loops accommodate up to 5 cm (2") wide webbing, in a marine tough design. The high-intensity flashing LED light automatically activates for 20+ hours when it comes in contact with salt or fresh water, and can be deactivated simply by pushing the red button. The ACR Auto HemiLight™3 flashing survival light attaches to almost any style life jacket in a matter of seconds to safely meet USCG, MED and SOLAS requirements.