The Dresco lighting set Monorail is a super thin front and rear light with bright small COB LED lights, which together form one light bundle. The front light has a light intensity of 25 Lumen and the rear light a strength of 15 Lumen. Easy to operate due to the large push button on top of the lamp. The lights have four different functions: on (100%)/eco (50%)/blink/off. Easy to attach to the handlebar or seatpost without tools with the rubber attachment. Suitable for handlebars and seat posts with a diameter of 22.3 to 31.8 mm. The lights operate on 4 included CR2032 batteries.