Just say out loud the music you want to listen to and this speaker from Acoustic solutions will play it. The Amazon Alexa voice-control makes this speaker hands-free and convenience. Far-field voice recognition means your speaker can hear you from across the room. Ask questions, stay up-to-date on the news, traffic and weather. Connect your smart device to your speaker using the AUX in or Bluetooth. Features Amazon Alexa far-field voice recognition technology. Experience 360 degrees of sound from this cylinder shaped speaker. 1 speaker. Compatible with iPod, iPhone and iPad. Bluetooth compatible. 3.5mm AUX in. 20 watts per speaker. 1 amplifier channel. Frequency 75Hz-20000Hz. General information Size H22.5, W11.3, D11.3cm. Model number S2. Speaker diameter 11.3cm. Mains operated. (not included).