The utility model which has the advantages of unique style, simple structure, beautiful appearance, practicality and low cost is an ideal theft-proof alarm device for bicycles.
该装置样式独特，结构简单，美观实用，造价低廉，是一种理想的自行车防盗报警装置。
The utility model which has the advantages of unique style, simple structure, beautiful appearance, practicality and low cost is an ideal theft-proof alarm device for bicycles.
该装置样式独特，结构简单，美观实用，造价低廉，是一种理想的自行车防盗报警装置。
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