Police Car Light Trumpet Electric Horn for Bicycle 1,with 4 tones 2.100% brand new 3.for electric bike 4.portable speaker 6 LED 4 Sound Electronic Bicycle Bike 4 Tones Bell Beeper Siren Horn Car Light Trumpet Description & Specification: This police car light trumpet, there are four buttons to push to make four loud siren sound while lighting warning. Four switches control 4-tone of loud alert ...