Feature 1High strength ABS shell, durable and solid. 2This speaker can make your voice louder with great voice amplification performance. 3Built-in rechargeable battery, long battery life, can work for about 15-20 hours on a single full charge. 4Comes with a strap, can be worn at the waist and used conveniently. Compact and lightweight, you will not feel heavy. 5Can work with MP3, MP4, cellphone, and computer. Ideal for teacher teaching, travel guide, public speaking, etc.Description: This powerful voice amplifier can make your voice louder so that you don't have to consciously say loudly or even shout when needed. It will protect your throat and is good for your health. Ultra-long battery life allows 15~20 hours of continuous use. And you can stably and comfortably fix the amp on your waist with the waistband. It is ideal for teachers, coaches, travelguides and so on. Features: 1. High strength ABS shell, durable and solid. 2. This speaker can make your voice louder with great voice amplification performance. 3. Built-in rechargeable battery, long battery life, can work for about 15-20 hours on a single full charge. 4. Comes with a strap, can be worn at the waist and used conveniently. Compact and lightweight, you will not feel heavy. 5. Can work with MP3, MP4, cellphone, and computer. Ideal for teacher teaching, travelguide, public speaking, etc. Specifications: Type: US, EU, UK (Optional) Color: Black Shell Material: ABS Size: Approx. 105 * 85 * 42 mm / 4.1 * 3.3 * 1.7 inch Battery Type: Built-in 7.4V Lithium Battery Battery Capacity: 1800mAh Power Supply: Input AC 100V-240V 50/60Hz; Output DC 10V 350mA Output Power: Max. 20W Frequency Response: 100Hz-13kHz3dB Charge Time: About 3-4 Hours Working Time: About 15-20 Hours (in full charge) Package Weight: About 400g Package List: 1 * Voice Amplifier 1 * Power Adapter 1 * Microphone 1 * Waistband 1 * Audio Cable 1 * User Manual (Other items in the pictures are not inicluded.) Note:1. The microphone is directional. Please put the microphone pointed at your mouth rightly at a distance of about 20-30mm. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }2.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.