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 says the $130 Tap will ship later this month. The aptly named Dot is the kid sister version of Echo. According to Amazon, the Dot came about after a whole bunch of customers asked for a way to hook in their own speakers to Echo. This device is, essentially, an Echo, but for half the price at $90.