Soondar&reg; Colorful Rainbow 32 LED Wheel Signal Lights Lamp for Bikes Bicycles Brand change to:Soondar Easy installation, it can be fixed on cycle spoke. Consists of 32pcs colorful LEDs. Pattern is clear and completely when speed up to 20 km / hour. Equipped with light sensor and movement sensor, flash only at night and moving, it will not work and save power when not running. Operated by 3 AAA batteries(not included), can work about 48 hours.