What's the difference between Echo dot and echo Dot 2nd generation?

Related questions

1. Does Echo DOT need WiFi?
2. Can you use echo dot without WiFi?
3. Can I use echo dot without echo?
4. Do you need an echo for the dot?
5. Can Alexa play my iTunes library?
6. Do you have to pay a subscription for Alexa?
7. Can Alexa play music when I'm not home?
8. Do I have to pay monthly for Amazon Echo?
9. Can you use echo dot without prime?
10. What can an Amazon Echo do?

Tags

1. #charcoal
2. #probably
3. #audio
4. #sound
5. #given
6. #generation
7. #softer
8. #stereo
9. #connect
10. #surface
11. #better
12. #amazon
13. #design
14. #decor
15. #edges
16. #improved
17. #noticeable
18. #second
19. #third