两者之间的区别是什么 ECHO DOT (3RD GEN) 和 在 countries.United States?

2018

2018

3.9” x 3.9” x 1.7” (99 毫米 x 99 毫米 x 43 毫米)

10.6 oz. (300 grams)

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作業系統相容性：Android 和 iOS

Speaker size: 40.6

雙頻 Wi-Fi 支援 802.11 a/b/g/n/ac（2.4 和 5 GHz）網絡

Advanced Audio Distribution Profile (A2DP) support for audio streaming from your mobile device to Echo Dot or from Echo Dot to your Bluetooth speaker. Audio/Video Remote Control Profile (AVRCP) for voice control of connected mobile devices. Hands-free voice control is not supported for Mac OS X devices. Bluetooth speakers requiring PIN codes are not supported.