TruSound Audio T2, Wireless Bluetooth Portable Speaker/speakerphone 360 Degree Sound, Glossy Black Great speaker for the alexa dot Easy to use: Built-in rechargeable lithium-ion battery for up to 10 hours of playtime Built-in microphone for hands-free speaker phone calling. Hi-fi portable bluetooth device Loud powerful sound, 360 degree sound is omnidirectional, 5 watts of audio power amp Bluetooth wireless speaker works with iphone x 8,7, 6 and , samsung galaxy 8,7 note, 6 edge