【Powerful Sound Projection】– With 30W power, this megaphone speaker projects your voice up to 800 yards, making it ideal for large crowds, sporting events, and outdoor activities. The loudspeaker ensures your message is heard without straining your voice. 【Alert with Siren Mode】– Easily grab attention with the built-in siren feature. Activate the alarm mode at the push of a button for instant, loud emergency or alert notifications, perfect for events and crowd control. 【Volume Adjustable for Control】– Adjust the audio output to your needs with the convenient volume control slider located at the back of the bullhorn megaphone, ensuring the perfect sound level for any situation. 【Multiple Input Options】– Expand your communication reach with the multi-input feature. Connect an external audio source via USB or SD card, making this portable voice amplifier a perfect companion for public announcements and events. 【Works in All Weather Conditions】– Constructed from durable ABS plastic, this bullhorn loudspeaker is built to withstand harsh weather, offering reliable performance for both indoor and outdoor events. Take it anywhere, from sporting events to beach parties! Get your voice heard loud and clear with this 30W powerful megaphone speaker, designed for maximum sound projection up to 800 yards. Whether you're at sporting events, rallies, or outdoor gatherings, this bullhorn megaphone ensures clear communication without straining your voice. Featuring siren mode for instant crowd attention, adjustable volume control, and USB/SD card support, it’s perfect for announcements and emergencies. Built with durable, weather-resistant ABS plastic, this loud horn is made for all conditions. Powered by 4 D batteries (not included), this portable voice amplifier is a must-have for cheerleaders, coaches, event organizers, and more. Be loud, be heard!