CFIKTE Bike Bells6 LED Lights Bicycle Mountain Bike Police Sound 4 Sound Electronic Horn 4 switches to Control 4 Police Siren Sounds 4 ringtones Free Choice Life Rainproof Design

This is a multi-functional product specially designed for bicycles and simple electric vehicles., Life rainproof design, can be used outdoors in rainy days, easy to install and use, and very practical in function., Four switches control 4 siren sounds, and 4 ringtones are free to choose., The 6 LED bulbs flash together with the ringing of the bell, especially when there is not enough light., Power supply: Two AA size 5 batteries (not included).