Cool 2 Side 32 LED 32 Mode Night Waterproof Wheel Signal Lamp Reflective Rim Rainbow Tire Bikes Bicycle Fixed Spoke Warn Light

Mode: Automatic mode: It is only working at night and motion Bright mode: It is working at any time except "Turn Off" Operation: Longer pressing button about 2 seconds to turn on or turn off the light, light first enter into the automatic mode while it is turned on with the 13st-16th led's flashing,then can be changed to the manual mode by just short clicking the button with 1th-4th led's flashing. Battery: Operated by 3 x AAA batteries (Not included) Size:16.5*3.8*1.5CM