Bike Police Lights Horn Electronic Cycling Tail Lamp Horn 4 Sounds 6 Led Police Siren Horn Bell Light Bike Equipment Accessoriesred, Blue1pcs EASY TO USE: Built in 6 red lights. Easy to install and remove on bike with clamp provided. Fits tube within 24 mm diameterFOUR EFFECTS OF POLICE WHISTLE: Please note, press the certain one of the buttons will keep steady on and won't stop, unless press other three buttons to select short siren - Controlled by a four button switchPOWER: Powered by 2 AA batteries (batteries not included). Before use, please unscrew the housing and install batteries correctly.SUPER LOUD: Siren sound has 110 decibel level, loud enough for safety purpose.FUNCTION: This super loud police siren is perfect for kids who like to pretend to be a policeman or who need to warn others when cycle under rain and so on.FEATURES:This super loud police siren is perfect for kids who like to pretend to be a policeman or who need to warn others when cycle under rain and so on.Siren sound has 110 decibel level, loud enough for safety purpose.Please note, press the certain one of the buttons will keep steady on and won't stop, unless press other three buttons to select short siren - Controlled by a four button switchBuilt in 6 red lights. Easy to install and remove on bike with clamp provided. Fits tube within 24 mm diameterPowered by 2 AA batteries (batteries not included). Before use, please unscrew the housing and install batteries correctly. :Color:red,white,blue.Quantity:1pc.Main Material: ABS.NOTE:Due to the light and screen setting difference,the item's color may be slightly difference from the pictures.Please allow slight dimension difference due to different manual measurement.Package Including1pc* Electronic Bike Light