Using wide light emission LEDs, new Firefly PRO strobes cut through foul conditions with a super-bright flash visible for over three miles. With three activation functions, select between the ultra-bright strobe light or the SOS strobe to visually alert Search and Rescue of your location, and toggle to the Steady-On feature for close-up recovery operations. The cool white color of the LED strobe has no yellow tint, allowing the light to be seen at greater distances. With the latest microprocessor and energy efficient electronics, the Firefly PRO operates continuously for over 56 hours—48 hours longer than SOLAS/USCG regulations. Key Features Double-sided hook and loop strap attachment method Cool white colored LED can be seen at greater distances Will flash continuously for 56 hours Three activation functions for alert signaling Specifications Type Approval: USCG and SOLAS Activation Method: Automatic Battery Type: 2 AA Battery Life (continuous use): 56 hours Case Material: ABS plastic Dimensions: 4-3/8"L x 2-1/4"W x 1-1/4"D Light Type: Strobe Maximum Range of Visibility: Over 3.5 miles Warranty: One year