About this item 【 ORIGINAL BLUETOOTH VOICE AMPLIFIER 】 The wireless voice amplifier has covers a range of 19,800 sq.ft(1850 ㎡) for up to 240 people. Built-in DSP sound chip for stereo surround sound with 2*4.0-inch wool cone woofers and 2*1.5-inch silk cone tweeters. Make your voice clear and loud for an exciting experience both indoors and outdoors. 【 SHIDU VOICE AMPLIFIER FOR TEACHERS】 It is a powerful assistant for teachers, coaches and other teaching professionals. It can effectively amplify your voice loudly, allowing you to express yourself clearly, even in noisy environments, saving your voicesaving your voice, protect your throat. 【 DUAL UHF WIRELESS MICROPHONE 】 The amplifier comes with a handheld microphone and headset for fast and stable signal transmission and a connection range of up to 49.2 feet. The dynamic microphone features accurate voice pickup with high sensitivity and active noise cancellation. 【 LARGE BATTERY CAPACITY SMALL SIZE 】 Built-in 5200mAh(2*2600mAh) rechargeable battery with up to 15 hours of usage time. It can fulfill your long time lecture teaching or presentation needs. With the size of 4.92*3.94*2.28 inches and weight of 1.03 pounds, the mini microphone and speaker can be carried easily. 【 MULTI-FUNCTIONAL SUPPORT 】 The personal voice amplifier also supports TF card, USB, and AUX audio inputs, and supports the connection of a 3.5mm wired microphone for use. The better sound quality is great for use in lectures, teaching, presentations, meetings. 【 OUTSTANDING QUALITY 】SHIDU is committed to manufacturing quality products with superior audio performance. We offer a 36-month warranty on our products. If you have any questions about using our products, please feel free to contact us. › See more product details