*Used 4*18650 battery pack *Using a CREE XM-L T6 LED and two XP-E R2 LED *Elastic ... for various types of bikes Description:1. Using a CREE XM-L T6 LED and two XP-E R2 LED, highest ... , current output 0.8A, the brightness of 400lm.B: Middle XM-L T6 lights, current output 3.0A, the brightness of ...