Check the listing for details. Amazon Echo Dot 3rd Gen Smart Speaker - Heather Gray (D9N29T) B2. Color: Gray, Condition: New, Made in China. Listed at 34.95 USD. The Amazon Echo Dot 3rd Gen Smart Speaker in Heather Gray is a sleek and modern addition to any home. With its sphere shape and fabric material, it fits seamlessly into any room decor. This smart speaker is universal in brand compatibility and model compatibility, making it easy to incorporate into your existing technology setup. With Alexa smart home compatibility, it allows for easy voice search and control of your smart home devices. The subwoofer included in the system configuration enhances the audio quality, delivering 15W RMS power for a superior listening experience. The wireless connectivity options including Bluetooth and Wi-Fi make it easy to connect to your devices for a seamless smart home setup.