Vmax+ 150 is NiteRider&';s first taillight featuring 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+ 150 features mode memory, will power ON in the last mode used. 6 Modes with Run Times: 4:30-25:30h Lumen Output: 150 Charge Time: 2:00h Water / Dust Resistant IP64 Rated USB-C Rechargeable Mode Memory (Powers ON in last mode used)