Dr. Bai graduated from the The Fourth Military Med Univ, Xian City, Shaanxi, China in 1984. He works in Tracy, CA and 1 other location and specializes in Pain Management. Dr. Bai is affiliated with Doctors Hospital Of Manteca and Sutter Tracy Community Hospital.
Answer Wiki. The Amazon Echo and Amazon Echo Dot are stationary devices (they need to be plugged in). The difference between them is that the Amazon Echo has a much better speaker built in, while the Dot is intended for use with an external speaker via line out/Bluetooth. The Dot is much smaller and cheaper so if you want Alexa in multiple locations, it's the best option.
Amazon Echo (known in-development as Doppler or Project D and shortened and referred to as Echo) is a smart speaker developed by Amazon.com. The device consists of a 9.25-inch (23.5 cm) tall cylinder speaker with a seven-piece microphone array. The device responds to the name Alexa; this wake word can be changed by the user to either Amazon or Echo. The device is capable of voice interaction, music playback, making to-do lists, setting alarms, streaming podcasts, playing audiobooks, and providing weather, traffic and other real time information.