The rear light body has a special aerodynamic profile, developed to match perfectly with Pinarello Dogma and GAN aero seat posts. It works perfectly also with classic round shape seat posts thanks to the special fixing systems made by a silicone wrap. Charging is done with USB cable in about 2 hours. Battery with Lithium-ion polymer technology provides about 3 hours of light at full power. The high brightness LED will make you visible from hundreds of meters away.