The Sigma Brakelight tail light has been specially designed for cyclists. The high bright power turns on the LED at the slightest pull of the brake lever to indicate that the cyclist is braking. It only weighs 6 grams so it is very light and also very easy to install on the bike. It is compatible with all mechanical braking cables. It has an aerodynamic design and exists in 5 different colors so that its integration into the bicycle is total.