M-wave bicycle horn. Color: green Material: plastic Gender: junior - Features 2 white LED lights in the eyes of the Alien - Squeeze the alien's head and then hear the horn make a sound - Easy to attach with the elastic around your handlebars - Includes 2x CR2032 batteries - Suitable for handlebar tube diameter: 22.0-35.0 mm - Features 2 functions: flashing and constant on