Foldable design for easy storage. Wireless Bluetooth for unrestricted movement. Stereo sound with Deep Bass for a full audio experience. Lightweight and comfortable for daily use. Built-in microphone for clear calls. About this item: BT 5.0 chip, 10 meters efficient and stable transmission distance, fast connection. Large 40mm speaker, powerful mega bass sound effect. 20 Hours of long battery life, stable sound transmission. Multi-purpose, free to listen to music by wired/wireless dual-mode. Multifunctional freestanding button, easy one-button operation.