Go Pal M3 Bicycle Front Light with Rechargeabele Battery -[Super bright]- brightness like me driving my car running on the road. -[Durable]- Adopts aviation aluminum alloy shell, with high quality PCB and native American brand CREE U2 lamp bead and specially designed waterproof battery pack, make sure can work perfectly in complex riding conditions. -[Long duration]- 4 Cell of 1600mAh 18650 Li-on,mid lighting mode more than 7 hours -[Easy Installation]- Two different sizes rubber bands and specially designed bearing, can fit for most of bicycles. -[Guarantee]- All Go Pal products can accept refund without any reason within 45 days.