Coupon code: NVFBIPOX
MUST READ: There is a control key at the BOTTOM of TOTAL CONTROL BOX, when its "ON" position, light brights all the time. When "OFF" position, light only brights when pressing the one of 4 buttons.
4 Button Controls: Four buttons control 4 tone of police whistle. When press button bike light emits a 6 Red and Blue LED Light with the effect of flicker and the police whistle.