This strobe light has outperformed every strobe light we have used for ultralight operations in the past! It delivers an amazing four joules flash from a xenon bulb and can be seen well past the FAA minimum of 3 miles. It draws a mere 300 milliamps and csan be run off of two 9 volt batteries or the simplest is to wire it into your electronics system with an on/off switch. The frensal lense magnifies and intensifies the beam so it can be seen at any angle.