Powerful: This portable amplifier delivers 30 watts of power, enough to carry sound up to 800 yards away. It is battery operated and requires a (4) D battery. Portable: This amp is small and portable, measuring exactly 6.3 inches x 10.0 inches. It also has a foldable handle and black ribbon to prevent it from becoming a burden on outdoor rides Durable and safe: the body is all made of ABS plastic, strong and non-combustible. So, make the most of it Alarm/siren and Music: This loudspeaker provides an alarm and a piece of music. You can adjust the volume by sliding the volume adjuster to get others' attention when necessary Versatile: This portable yet powerful megaphone is favored by event organizers, sporting events, cheerleaders, administrative departments, fire departments, police departments, schools and others who prefer to use it Date First Available December 19, 2022