Product Description: This speaker is the best companion for audio source output devices such as MP3, MP4, CD player, computer, music phone, etc; The appearance design is fashionable, lightweight, small in size, foldable, and easy to carry; High pitched clear, low pitched pure; Unique sound guide board design; There is an independent volume and speaker protection adjustment push, used to control the volume level; Designed with a power switch button and a work indicator light.