Battery Included: Yes - This wearable megaphone comes with a battery included, ensuring you can use it right out of the box without any additional purchases. Perfect for teachers who need a reliable, ready-to-use voice amplification system. High-concerned Chemical: None - Safety is paramount with our products. The wearable megaphone contains no high-concern chemicals, making it safe for prolonged use in classrooms and during tours. 360° Surround Stereo Sound:Exquisitely crafted with a hollowed-out speaker design for pure audio clarity-capturing every nuance, meticulously crafted in every detail. Intelligent noise reduction with wide sound coverage:360° wide-angle sound projection, high-fidelity microphone paired with a sealed chamber-no noise, no harshness, no lag. Enjoy crystal-clear audio from over 100 feet away, as if speaking face-to-face. Powerful Battery Life for Extended Amplification: The Amplifier features a high-capacity 1500mAh lithium battery, effortlessly powering through daily lessons to effectively boost your productivity. Model: S892 Dimensions: 102*88*33mm Includes: Shoulder strap, charging cable, headset Supports: Amplification function Weight: 163g Suitable for: Teaching, training, tour guiding, promotions Color: White Material: ABS Package Contents: 1*Megaphone 1*Microphone 1*Data cable 1*Belt