• Built-in 2200mAh lithium battery, Battery life is very strong, 9 hours of use time, 3-5 hours can be fully charged
• Very clear sound, no background noise, the effective range of high-power speakers reaches 1000 square meters
• Attach a dual-use belt,the length of the waistband can be adjusted freely, with metal live buckles.
• With U disk and TF card dual socket, support U disk/ TF card playback,can be inked to computer tablet phones
• Suitable for: Teaching, tour guides, promotions, meetings, particularly if one is having trouble with one's own vocal volume.

1x S17 Voice Amplifier 1x Professional Microphone1x Waistband Belt1x USB charging cable1x Receiver