How close does your phone need to be?
Can I walk around the house with my watch on and not carry my phone, yet still get the notifications and calls?
Depends how big your house is haha. But the watch has an option to connect to wifi if it lost connectivity with the phone. This allows it to get notification. HOWEVER, this watch does not let you make calls. You can only place the calls, but you have to use your phone to talk!! (there is no speaker on the watch). I am 99% sure that the 3G version of the watch, which is coming soon, will have a speaker and allow you to call. So I'd wait for that