StilGut Powerful Sound - universal Bluetooth speaker with new Bluetooth 3.0 technology - wireless, noise cancelling with 360&deg; sound, microphone, radio, 2.3 W, Gold 360 sound: high quality Bluetooth speaker (2.3 W) with noise and echo cancellation Average playing time: 3-4 hours, charging time: 2 hours Works with all Bluetooth-enabled devices like iPhone, Samsung Galaxy, BlackBerry Passport, Sony Xperia etc. Dynamic, elegant design with over-heated and over-current protection; Dimensions: 66x66x60 mm 24 months warranty