Feature: 100% brand new and high quality The product is consist of 14 pcs colorful LEDs It can flash 30 different patterns,and the patterns will be changed every 4 seconds Patterns is clear and completely when speed up to 20kms/hr Auto-sensing switch control Equipped with light sensor and movement sensor,flash only at night and action It will not work and save power when not riding Battery: Operated by 1x AAA(NOT included),could be max to 12hrs when it works Size: 7*4*1.5cm Waterproof level: IPX5 Material: Plastics Package Content: 1X Spoke Light