Tr&uuml;Sound Audio T2, Wireless Bluetooth Portable Speaker/Speakerphone 360&deg; Sound, Red Bluetooth wireless speaker works with IPone X, 8, 7 Plus , Samsung Galaxy 8S,7 Note 7, Edge Easy to use: Built-in Rechargeable Battery up to 10 hours of playtime. Great with alexa Dot Music Built-in microphone for hands-free speaker phone calling. Hi-Fi Portable Bluetooth device. Loud powerful sound, 360 degree stereo sound is omnidirectional, 5 watts of audio power amp. 1000hz @80db. CSR 3.0 for better audio quality than 4.0. 3.0. 33 feet of range.