Portable Voice Amplifier Booster Megaphone with Headset with Rose Gold Microphone Description: Built-in 2200mAh lithium battery, battery life is very strong, 9 hours use, 3-5 hours can be fully charged Very clear sound, no background noise, effective range of high reaches 1000 square meters Attach the dual-use strap, the strap length can be adjusted freely, za using live metal buckles. With dual slot and TF card, TF disk/card playback, can be printed on computer tablets Suitable for: teaching, tour guides, meetings, especially if you have problems with the volume of your own voice. Specifications : _ Type: Voice Amplifier Megaphone Amplifier Model: S17 Material: Size: (L. x H x D. ) 8.4x9.2x2.8 cm/3.3x3.6x1.1 inch Battery Capacity: 2200mAh Maximum usage time: 9 hours Distance: 1000 square meters Kolor: /Pink gold Suitable for: teaching, guides, meetings The package includes: 1x S17 voice amplifier 1x professional microphone 1x hip belt 1x charging cable USB 1x receiver