The See Me 1.0 Compact LED light provides 20 lumens of illumination for safety and marking. Ideal for paddlers and recreational boaters, this LED personal locator light attaches to most PFDs. It is a United States Coast Guard Approved signaling device that Emits 360 degrees of light visible up to 3.4 miles. Compact steady on light is lit by a white LED that provides 360 degrees of visibility for paddlers and small craft. Unbreakable lifetime LED bulb never needs replacing Provides 20 lumens of light runs for 17 continuous hours on one set of 2 AAA alkaline or lithium batteries Exceeds USCG regulation: visible 3.4 miles 5.5 km on a dark, clear night. USCG requirement a minimum of 1 nautical mile 1.9 km visibility Easy twist on off Impact resistant and waterproof IPX7 rating Designed to be attached to a Personal Flotation Device. Lanyard cord and hookloop strap included.