[Clear and Loud Sound and Multi-Format Support] Amplify your voice and save your throat when you need it. Provides clear and stable sound, perfect for large groups of people. The product has two main functions, one is an amplifier and the other is a multi-purpose speaker. The speaker can be used for MP3 and WAV formats. Music player and PC speakers are included. The music player has two interfaces, one for TF card and one for USB flash drive.[Versatile and Practical] Powerful, portable and super easy to use, this amplifier speaker system is a must-have. It can be used for a variety of purposes, to make your voice heard at meetings or when teaching in a large room, for large outdoor events, such as weddings, or tourist guides.[Rechargeable Voice Amplifier] Built-in a large 1200mAh lithium-ion battery, so that the microphone speaker is fully charged in only 2-3 hours, but the amplification playback time is up to 3-4 hours, music playback time up to 4 hours. The amplifier has a clear voice, stable and loud sound to use for coaching, presentation, training, teaching with many people in a large space.[Mini Size to Carry] Mini and portable. Its compact size and light weight allow it to work anywhere, e.g. for teachers, outdoors etc. Compact in size, but with a built-in speaker that can produce powerful results.[Indicator Light Design] The indicator light provides different signals. The blue indicator is shown when the power is turned on. It flashes when you insert a TF card/USB flash drive. When the remaining power is below 10%, the blue light flashes. During charging status, the red indicator is on until it is fully charged and then turns off.Portable voice amplifier with wireless microphone Speaker FM radio MP3The speaker can be used for MP3 and WAV formats. Music player and PC speakers are includedThe music player has two interfaces, one for TF card and one for USB flash drivePortable voice amplifier Megaphone Booster with wireless microphone Speaker FM radio MP3Suitable for: teaching, tourist guides, promotions, meetingsSupports USB disk and TF card to play musicSound power: Greater than 5WBattery capacity: 1200mAhCharging: use standard USB 5V (can use mobile phone charger)Color: blackMaterial: ABSSize: 8.5 x 8.5 x 3.3 cmPackage contents:1 x Portable voice amplifier1 x Wireless microphone1 x Charging cable1 x BeltOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.