high quality Long Battery Life: Portable voice amplifier built in 2600mAh rechargeable battery that could get up to 7-9 hours of voice amplification on one charge, perfect for teachers and presenters. wireless clip on microphone support 10+ hours. Both them are be charged quickly with the included Type-C charging cableSay Goodbye to Voice StrainWB005 Bluetooth amplifier with a wireless lapel microphone, designed for those who value clarity and portability. With a powerful 15W output, this speaker ensures your voice is heard loud and clear, with no screeching or distortion,whether youre teaching, presenting, or entertaining. This portable voice amplifier is a Teachers Dream.Bluetooth Playback: The voice amplifier supports Bluetooth music playback, easily connect the speaker to your device for a hassle-free audio experience, but it does not support simultaneous use of both music playback and voice amplification. You can easily switch between the two functions as needed.Compact Clip-On Design:The wireless lapel microphone only weights 18.3g/0.64oz,making it more lightweight compared to other brands' lavalier microphones, it can be handheld or clipped, providing flexibility for different speaking situations and ensuring excellent amplification.Simple Usage $ Mute:It is very easy to operate,just turn on the amplifier and microphone, and they will automatically pair.Both speaker and lapel mic both comes with a mute button, providing users with the flexibility to temporarily silence the microphone when needed. This feature is useful for managing interruptions or private conversations without the need to turn off the entire system.