Products Detail :

Brand : Rockbros

Weight : 33 g 

Size : 3.5 cm * 3 cm 

Material :Silica gel 

decibel (db) : 90db

Voice : 3 voice to choose 

Color : Red，black.blue and green

Features :

3 modes voice to choose ,5 appearance colors

Silicone material does not hurt handlebar

Super power saving, batteries can be used for one year

Rainproof