Material fabricdimensions 148 x 88 x 88 mmweight 821 gramswlan connection supports 802.11 a/b/g/n. does not support connections to ad-hoc (or peer-to-peer) wi-fi networksbluetooth connectivity supports advanced audio distribution profile (a2dp) for streaming audio from mobile devices to echo or from echo to your bluetooth speakers and audio/video remote control profile (avrcp) for voice control from connected mobile devices. hands-free voice control is not supported on mac os x devices. bluetooth speakers with pin entry are not supportedaudio 63 mm woofer and 16 mm tweetersystem requirements the alexa app is compatible with fire os, android, and ios devices and is available through the desktop browser. certain skills and services are subject to change or removal at any time, may not be available in all regions, and may require a separate subscription or other fees.