Three flash modes: fast flash, slow flash, full illumination, with replaceable battery. After replacing the battery, it can be used continuously. Put them anywhere, on your wrists, your arms, your ankles. The glowing bracelet acts as a warning light to keep you safe in the dark, and makes a great prop for cheering at parties or concerts. The night is very bright, high visibility protects you, suitable for night running, jogging, dog walking, concerts, camping and other outdoor sports.Above 2000 is the price for sea transportation