The Swift series headlight gives you more than enough lumens at Niterider's lightest weight for headlights. NiteRider makes this headlight USB rechargeable for convenient on-the-go charging. The Swift series features a highly durable light housing with Durable Fiberglass reinforced nylon meeting all required FL1 Standards for impact testing and water / dust resistance. Vmax+ 180 features COB (Chip-on-Board) LEDs, which for cyclists means it emits highly visible flash patterns in a smaller, more compact package. Its feather-like light weight makes it perfect as a wearable safety light—easily clipping onto straps, belt loops, and more. For added convenience, the Vmax+ 180 features mode memory, will power ON in the last mode used.