UPGRADE VERSION ,SOUND BEYOND SIZE: Wireless Stereo Ultra mini but super loud. Magnificent stereo sound and mega bass, Bluetooth 5.3 ensure that all your devices can be seamlessly connected within 66 ft.In addition, can also pair two identical speakers for TWS to experience a true surround sound.Up to 40 Playtime at medium volume BUILT-IN MICROPHONE: Mini Pet Portable Speaker was Built-in Microphone for speakers, so you can answer incoming phone calls hands-free