Giant Numen Plus HL 2 is a compact USB (Universal Serial Bus) rechargable bike light with 4 bright LEDs & a run time of up to 12 hours. With 3 modes a low battery indicator & an easy to mount & remove silicon holder. Features.- 4 bright LEDs.- 3 modes: high mid & flash.- USB (Universal Serial Bus) reachargable.- Small compact design.- Low battery indicator.- Rotational mount with silicon holder & adjustable hook.- Run time up to 12 hrs.