1.Length : 50cm Diameter: 2.3m/m.
2.PC tube : Diameter 6 m/m.
3.Power : DC 3V (No.3 battery x 2).
4.Action : Persistent light and twinkle light that you can choice.
5.Function : The raining day or during the night can freedom from danger when you
Ride a bicycle.
6.Install : It's very easy to put on the back wheel and axle of the bicycle.
