E-joy&reg; Solar Road Path Deck Dock Warning Lights with "Red" LEDs (2 Pack) Automatically illuminates when night falls or with the onset of inclement weather Has a visual distance of 700 yards, provides up to 10 hours of light 3 Setting switch for Constantly-On, Off, or Flashing Load capacity of up to 20 tons Dimensions of 4.3" x 3.9" x 1.2" (LxWxH) 3 Setting switch for Constantly-On, Off, or Flashing