Quantity 1 piece(s) Material PA66 Color Black Type Electronic Device Function Megaphone / horn / speaker Speaker Power 60 W Power Supply 12V Working Current 12V / 20A Other Features Speaker mouth size: 15cm (15cm) x 8cm (Width); Speaker length: 18cm; Speaker back diameter: 9cm; Tail diameter: 6.5cm; Cable connection: Red positive black negative; There are three buttons the sound is not the same at every keystroke sound: 300 dB the sound can not be too big (volume adjustable by the host) please keep distance between speaker and megaphone otherwise it will cause interference. Packing List 1 x Speaker 1 x Bag of screws