BL25 dual beam bicyle LED lamp use 3pcs high performance CREE XP-G2 LED generates max 1200lm output. The lamp integrated 2pcs 2600mah 18650 Li-ion battery to support at least 3 hours non-stop lighting. Areo-space aluminum material with hard anodized surface finish make the light much more durable. Easy switch operation, quick click to switch high, med, low strobe, SOS modes after turn on the light. Dual beam design to support flood lighting and spot lighting. IP65 waterproof assure you can ride at rainning condition.