his section taillights fit within the diameter of the bike oh 3cm 

Dahon is inappropriate oh 

Require large diameter taillights， please choose this oh: 

Low-carbon green! ! No battery! 

Drying in the sun during the day， night lights can be prolonged 

[Name] CYCLPRO Saiwei Pu Solar taillight 

[Switch] Press Switch 

[Color] black 

[Bulb] 2 LED 

[Battery] no batteries， solar-type 

[Charge Description] direct sunlight charging， long bright light mode can be about four hours， more than four hours flashing mode 

[Flashing mode] three kinds of flashing modes: Jishan; Dayton flash; long bright 

[Size] 68 × width 55 length taillights， deck skin diameter 22-30mm