Front USB RECHARGEABLE 1 LED CREE XM-L2 (U2) high performance   450/700 LUMENS 7 Functions: Mode 1 / Mode 2 / Mode 3 / FL1 / FL2 / Daytime flash (double burst) / SOS. Indicator: low battery, charge and full charge. Battery charging time: 2.5 hours approx. Automatic power off / on Lateral visibility Fixation to the handlebar Autonomy: between 1.30 and 45 hours depending on the mode of use.