Liquid-activated signaling device with an ultra-bright L.E.D. designed to enhance visibility in water, up to one mile. Inspired by Government issued water-activated safety strobes that attach to life vests on commercial airlines, the Light Saver securely fits onto a life ring or life vest with built-in, durable lanyard and clip. The Light Saver comes equipped with double insulated wiring, Because the LED sensor is water activated, once it dries off, it turns off--conserving battery life for many more uses. Flashing Safety Whistle with Strobe not only provides a bright visual flash to allow the user to be seen, Flashing Safety Whistle has a built in pealess whistle so the user can be heard as well as seen. This item is the perfect accessor to attach to throwable flotation devices. Be Seen and Be Heard! Te water activated strobe turns on automatically when making contact with water and Flashing Safety Whistle turns off when the contacts are dry. The batteries are replaceable and last up to 100 continuous hours.