Spanninga Ruby rear light The Ruby 3 has a power of a 0.5W LED and 2 extra bright LEDs which improves visibility. The rear light is light and compact. The Ruby 3 is easy to handle thanks to its silicone strap mounting system and built-in belt clip. The design of the Ruby 3 makes it an elegant rear light for sports and city bikes. The RUBY 3 ensures a great visibility of more than 220 meters. It also offers maximum functionality and safety with its 3 modes: economy mode, high beam and flashing light. The usage time can be up to 150 hours. Light source: 0.5W LED + 2 LEDs Power source: battery 2 x AAA Battery indicator: Yes Weight: <66 grams