The Firefly PRO Waterbug is a SOLAS-approved strobe light with a built-in water activation feature that will automatically activate once submerged. It is one of the brightest and most feature-packed strobe lights on the market today. And it is offered at a very attractive price!

The Firefly PRO Waterbug boasts a light output of over 41 candela per strobe for up to 56 hours, using standard alkaline batteries. That's 45% brighter than other USCG approved PFD lights.
The Firefly PRO also incorporates a new generation of revolutionary Wide Light Emitting LEDs to produce a 360 super bright flash with a visibility of over 3.2 miles.
With four functions, you can toggle between the Armed mode for automatic water activation, the ultra-bright Strobe Light, or the SOS Strobe to visually alert Search and Rescue of your location. Then you can switch to the Steady-On feature for close up recovery operations.

Water-activation function
Revolutionary 360 LED technology, with over 300 peak lumens output
Ultra-bright, cool white light has no yellow tint - so it travels farther
Energy efficient microprocessor and redesigned electronics for maximum operation life
Tested waterproof to 33 ft (10 m)
Set of user supplied AA alkaline, or lithium ion, batteries provides continuous strobe for over 56 hours, or steady-on for 28 hours twice as long as competing models and exceeds USCG and SOLAS requirements by over 48 hours
Compact size will easily fit inside an inflatable life jacket or pocket for comfortable wear-ability
Military spec casing is rugged enough to withstand years of abuse and the harshest environments
Two lashing loops and included Velcro strap for easy mounting to your life jacket, belt or pack - where it's always ready to use
Sliding on/off switch is easy to operate - even with gloves on
Strobe flash rate is 60 pulses/min
For Coast Guard requirements, alkaline batteries must be replaced annually; for SOLAS specs, must use lithium AA batteries, replaced every 5 years