With bright LED light + high light transmission fiber, condenser strong, good exposure (full lace even and soft light) effect is far superior to plastic pipe material products through CE ROHS certification, water treatment, etc., suitable for outdoor sports, night running, large festival parties, concerts, promotions, cheer and other activities. Third gear lighting mode: a file long bright flash second gear, third gear slow flash. Waterproof, high brightness emitted when walking Bright light, into the public spotlight.